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Finding the Fourth Proportional to 21,863.52, 32,772.96 and 19,239.12

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Solution

The fourth proportional to 21,863.52, 32,772.96 and 19,239.12 is: 28,839.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.52 : 32,772.96 = 19,239.12 : x
  2. Step 2: Convert to fraction form
    21,863.52/32,772.96 = 19,239.12/x
  3. Step 3: Cross multiply
    21,863.52x = 32,772.96 × 19,239.12
  4. Step 4: Simplify right side
    21,863.52x = 630,522,910.20
  5. Step 5: Solve for x
    x = 630,522,910.20/21,863.52
  6. Step 6: Final answer
    x = 28,839.04

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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.