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Finding the Fourth Proportional to 21,624.78, 32,411.25 and 9,934.86

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Solution

The fourth proportional to 21,624.78, 32,411.25 and 9,934.86 is: 14,890.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,624.78 : 32,411.25 = 9,934.86 : x
  2. Step 2: Convert to fraction form
    21,624.78/32,411.25 = 9,934.86/x
  3. Step 3: Cross multiply
    21,624.78x = 32,411.25 × 9,934.86
  4. Step 4: Simplify right side
    21,624.78x = 322,001,231.18
  5. Step 5: Solve for x
    x = 322,001,231.18/21,624.78
  6. Step 6: Final answer
    x = 14,890.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.