Home / 20,713.92-28,576.11-13,997.10

Finding the Fourth Proportional to 20,713.92, 28,576.11 and 13,997.10

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Solution

The fourth proportional to 20,713.92, 28,576.11 and 13,997.10 is: 19,309.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.92 : 28,576.11 = 13,997.10 : x
  2. Step 2: Convert to fraction form
    20,713.92/28,576.11 = 13,997.10/x
  3. Step 3: Cross multiply
    20,713.92x = 28,576.11 × 13,997.10
  4. Step 4: Simplify right side
    20,713.92x = 399,982,669.28
  5. Step 5: Solve for x
    x = 399,982,669.28/20,713.92
  6. Step 6: Final answer
    x = 19,309.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.