Home / 21,400.38-32,083.18-8,929.70

Finding the Fourth Proportional to 21,400.38, 32,083.18 and 8,929.70

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Solution

The fourth proportional to 21,400.38, 32,083.18 and 8,929.70 is: 13,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.38 : 32,083.18 = 8,929.70 : x
  2. Step 2: Convert to fraction form
    21,400.38/32,083.18 = 8,929.70/x
  3. Step 3: Cross multiply
    21,400.38x = 32,083.18 × 8,929.70
  4. Step 4: Simplify right side
    21,400.38x = 286,493,230.33
  5. Step 5: Solve for x
    x = 286,493,230.33/21,400.38
  6. Step 6: Final answer
    x = 13,387.30

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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.