Home / 21,737.81-29,998.19-12,306.38

Finding the Fourth Proportional to 21,737.81, 29,998.19 and 12,306.38

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Solution

The fourth proportional to 21,737.81, 29,998.19 and 12,306.38 is: 16,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,737.81 : 29,998.19 = 12,306.38 : x
  2. Step 2: Convert to fraction form
    21,737.81/29,998.19 = 12,306.38/x
  3. Step 3: Cross multiply
    21,737.81x = 29,998.19 × 12,306.38
  4. Step 4: Simplify right side
    21,737.81x = 369,169,006.23
  5. Step 5: Solve for x
    x = 369,169,006.23/21,737.81
  6. Step 6: Final answer
    x = 16,982.80

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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.