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Finding the Fourth Proportional to 21,957.78, 32,955.17 and 9,487.24

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Solution

The fourth proportional to 21,957.78, 32,955.17 and 9,487.24 is: 14,238.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,957.78 : 32,955.17 = 9,487.24 : x
  2. Step 2: Convert to fraction form
    21,957.78/32,955.17 = 9,487.24/x
  3. Step 3: Cross multiply
    21,957.78x = 32,955.17 × 9,487.24
  4. Step 4: Simplify right side
    21,957.78x = 312,653,607.03
  5. Step 5: Solve for x
    x = 312,653,607.03/21,957.78
  6. Step 6: Final answer
    x = 14,238.85

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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.