Home / 21,387.42-29,514.15-11,956.86

Finding the Fourth Proportional to 21,387.42, 29,514.15 and 11,956.86

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Solution

The fourth proportional to 21,387.42, 29,514.15 and 11,956.86 is: 16,500.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387.42 : 29,514.15 = 11,956.86 : x
  2. Step 2: Convert to fraction form
    21,387.42/29,514.15 = 11,956.86/x
  3. Step 3: Cross multiply
    21,387.42x = 29,514.15 × 11,956.86
  4. Step 4: Simplify right side
    21,387.42x = 352,896,559.57
  5. Step 5: Solve for x
    x = 352,896,559.57/21,387.42
  6. Step 6: Final answer
    x = 16,500.19

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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.