Home / 15,616.52-21,553.20-9,953.72

Finding the Fourth Proportional to 15,616.52, 21,553.20 and 9,953.72

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Solution

The fourth proportional to 15,616.52, 21,553.20 and 9,953.72 is: 13,737.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,616.52 : 21,553.20 = 9,953.72 : x
  2. Step 2: Convert to fraction form
    15,616.52/21,553.20 = 9,953.72/x
  3. Step 3: Cross multiply
    15,616.52x = 21,553.20 × 9,953.72
  4. Step 4: Simplify right side
    15,616.52x = 214,534,517.90
  5. Step 5: Solve for x
    x = 214,534,517.90/15,616.52
  6. Step 6: Final answer
    x = 13,737.66

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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.