Home / 20,147,666,815.20-30,221,500,222.80-9,661,485,579.60

Finding the Fourth Proportional to 20,147,666,815.20, 30,221,500,222.80 and 9,661,485,579.60

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Solution

The fourth proportional to 20,147,666,815.20, 30,221,500,222.80 and 9,661,485,579.60 is: 14,492,228,369.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147,666,815.20 : 30,221,500,222.80 = 9,661,485,579.60 : x
  2. Step 2: Convert to fraction form
    20,147,666,815.20/30,221,500,222.80 = 9,661,485,579.60/x
  3. Step 3: Cross multiply
    20,147,666,815.20x = 30,221,500,222.80 × 9,661,485,579.60
  4. Step 4: Simplify right side
    20,147,666,815.20x = 291,984,588,596,460,388,352
  5. Step 5: Solve for x
    x = 291,984,588,596,460,388,352/20,147,666,815.20
  6. Step 6: Final answer
    x = 14,492,228,369.40

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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.