Home / 21,545.52-29,731.86-11,985.90

Finding the Fourth Proportional to 21,545.52, 29,731.86 and 11,985.90

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Solution

The fourth proportional to 21,545.52, 29,731.86 and 11,985.90 is: 16,540.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,545.52 : 29,731.86 = 11,985.90 : x
  2. Step 2: Convert to fraction form
    21,545.52/29,731.86 = 11,985.90/x
  3. Step 3: Cross multiply
    21,545.52x = 29,731.86 × 11,985.90
  4. Step 4: Simplify right side
    21,545.52x = 356,363,100.77
  5. Step 5: Solve for x
    x = 356,363,100.77/21,545.52
  6. Step 6: Final answer
    x = 16,540.01

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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.