Home / 20,513.20-30,769.80-14,899.90

Finding the Fourth Proportional to 20,513.20, 30,769.80 and 14,899.90

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Solution

The fourth proportional to 20,513.20, 30,769.80 and 14,899.90 is: 22,349.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.20 : 30,769.80 = 14,899.90 : x
  2. Step 2: Convert to fraction form
    20,513.20/30,769.80 = 14,899.90/x
  3. Step 3: Cross multiply
    20,513.20x = 30,769.80 × 14,899.90
  4. Step 4: Simplify right side
    20,513.20x = 458,466,943.02
  5. Step 5: Solve for x
    x = 458,466,943.02/20,513.20
  6. Step 6: Final answer
    x = 22,349.85

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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.