Home / 21,424.14-29,565.30-11,992.71

Finding the Fourth Proportional to 21,424.14, 29,565.30 and 11,992.71

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Solution

The fourth proportional to 21,424.14, 29,565.30 and 11,992.71 is: 16,549.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.14 : 29,565.30 = 11,992.71 : x
  2. Step 2: Convert to fraction form
    21,424.14/29,565.30 = 11,992.71/x
  3. Step 3: Cross multiply
    21,424.14x = 29,565.30 × 11,992.71
  4. Step 4: Simplify right side
    21,424.14x = 354,568,068.96
  5. Step 5: Solve for x
    x = 354,568,068.96/21,424.14
  6. Step 6: Final answer
    x = 16,549.93

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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.