Home / 21,545.79-29,732.64-11,985.71

Finding the Fourth Proportional to 21,545.79, 29,732.64 and 11,985.71

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Solution

The fourth proportional to 21,545.79, 29,732.64 and 11,985.71 is: 16,539.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,545.79 : 29,732.64 = 11,985.71 : x
  2. Step 2: Convert to fraction form
    21,545.79/29,732.64 = 11,985.71/x
  3. Step 3: Cross multiply
    21,545.79x = 29,732.64 × 11,985.71
  4. Step 4: Simplify right side
    21,545.79x = 356,366,651.91
  5. Step 5: Solve for x
    x = 356,366,651.91/21,545.79
  6. Step 6: Final answer
    x = 16,539.97

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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.