Home / 21,545.05-29,731.65-11,984.92

Finding the Fourth Proportional to 21,545.05, 29,731.65 and 11,984.92

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Solution

The fourth proportional to 21,545.05, 29,731.65 and 11,984.92 is: 16,538.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,545.05 : 29,731.65 = 11,984.92 : x
  2. Step 2: Convert to fraction form
    21,545.05/29,731.65 = 11,984.92/x
  3. Step 3: Cross multiply
    21,545.05x = 29,731.65 × 11,984.92
  4. Step 4: Simplify right side
    21,545.05x = 356,331,446.72
  5. Step 5: Solve for x
    x = 356,331,446.72/21,545.05
  6. Step 6: Final answer
    x = 16,538.90

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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.