Home / 15,731.52-21,697.92-13,737.84

Finding the Fourth Proportional to 15,731.52, 21,697.92 and 13,737.84

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Solution

The fourth proportional to 15,731.52, 21,697.92 and 13,737.84 is: 18,948.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.52 : 21,697.92 = 13,737.84 : x
  2. Step 2: Convert to fraction form
    15,731.52/21,697.92 = 13,737.84/x
  3. Step 3: Cross multiply
    15,731.52x = 21,697.92 × 13,737.84
  4. Step 4: Simplify right side
    15,731.52x = 298,082,553.29
  5. Step 5: Solve for x
    x = 298,082,553.29/15,731.52
  6. Step 6: Final answer
    x = 18,948.11

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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.