Home / 21,545.07-29,731.50-11,984.91

Finding the Fourth Proportional to 21,545.07, 29,731.50 and 11,984.91

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Solution

The fourth proportional to 21,545.07, 29,731.50 and 11,984.91 is: 16,538.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,545.07 : 29,731.50 = 11,984.91 : x
  2. Step 2: Convert to fraction form
    21,545.07/29,731.50 = 11,984.91/x
  3. Step 3: Cross multiply
    21,545.07x = 29,731.50 × 11,984.91
  4. Step 4: Simplify right side
    21,545.07x = 356,329,351.67
  5. Step 5: Solve for x
    x = 356,329,351.67/21,545.07
  6. Step 6: Final answer
    x = 16,538.79

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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.