Home / 10,521,331.20-15,781,996.80-10,206,403.20

Finding the Fourth Proportional to 10,521,331.20, 15,781,996.80 and 10,206,403.20

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Solution

The fourth proportional to 10,521,331.20, 15,781,996.80 and 10,206,403.20 is: 15,309,604.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,521,331.20 : 15,781,996.80 = 10,206,403.20 : x
  2. Step 2: Convert to fraction form
    10,521,331.20/15,781,996.80 = 10,206,403.20/x
  3. Step 3: Cross multiply
    10,521,331.20x = 15,781,996.80 × 10,206,403.20
  4. Step 4: Simplify right side
    10,521,331.20x = 161,077,422,641,909.75
  5. Step 5: Solve for x
    x = 161,077,422,641,909.75/10,521,331.20
  6. Step 6: Final answer
    x = 15,309,604.80

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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.