Home / 21,691.12-32,532.80-6,105.04

Finding the Fourth Proportional to 21,691.12, 32,532.80 and 6,105.04

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Solution

The fourth proportional to 21,691.12, 32,532.80 and 6,105.04 is: 9,156.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,691.12 : 32,532.80 = 6,105.04 : x
  2. Step 2: Convert to fraction form
    21,691.12/32,532.80 = 6,105.04/x
  3. Step 3: Cross multiply
    21,691.12x = 32,532.80 × 6,105.04
  4. Step 4: Simplify right side
    21,691.12x = 198,614,045.31
  5. Step 5: Solve for x
    x = 198,614,045.31/21,691.12
  6. Step 6: Final answer
    x = 9,156.47

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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.