Home / 20,147,666,813.70-30,221,500,220.55-9,661,485,578.10

Finding the Fourth Proportional to 20,147,666,813.70, 30,221,500,220.55 and 9,661,485,578.10

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Solution

The fourth proportional to 20,147,666,813.70, 30,221,500,220.55 and 9,661,485,578.10 is: 14,492,228,367.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147,666,813.70 : 30,221,500,220.55 = 9,661,485,578.10 : x
  2. Step 2: Convert to fraction form
    20,147,666,813.70/30,221,500,220.55 = 9,661,485,578.10/x
  3. Step 3: Cross multiply
    20,147,666,813.70x = 30,221,500,220.55 × 9,661,485,578.10
  4. Step 4: Simplify right side
    20,147,666,813.70x = 291,984,588,529,389,797,376
  5. Step 5: Solve for x
    x = 291,984,588,529,389,797,376/20,147,666,813.70
  6. Step 6: Final answer
    x = 14,492,228,367.15

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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.