Home / 20,147,666,931.20-30,221,500,396.80-9,661,485,695.60

Finding the Fourth Proportional to 20,147,666,931.20, 30,221,500,396.80 and 9,661,485,695.60

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Solution

The fourth proportional to 20,147,666,931.20, 30,221,500,396.80 and 9,661,485,695.60 is: 14,492,228,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147,666,931.20 : 30,221,500,396.80 = 9,661,485,695.60 : x
  2. Step 2: Convert to fraction form
    20,147,666,931.20/30,221,500,396.80 = 9,661,485,695.60/x
  3. Step 3: Cross multiply
    20,147,666,931.20x = 30,221,500,396.80 × 9,661,485,695.60
  4. Step 4: Simplify right side
    20,147,666,931.20x = 291,984,593,783,252,942,848
  5. Step 5: Solve for x
    x = 291,984,593,783,252,942,848/20,147,666,931.20
  6. Step 6: Final answer
    x = 14,492,228,543.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.