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Finding the Fourth Proportional to 15,737.58, 21,717.88 and 8,664.02

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Solution

The fourth proportional to 15,737.58, 21,717.88 and 8,664.02 is: 11,956.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,737.58 : 21,717.88 = 8,664.02 : x
  2. Step 2: Convert to fraction form
    15,737.58/21,717.88 = 8,664.02/x
  3. Step 3: Cross multiply
    15,737.58x = 21,717.88 × 8,664.02
  4. Step 4: Simplify right side
    15,737.58x = 188,164,146.68
  5. Step 5: Solve for x
    x = 188,164,146.68/15,737.58
  6. Step 6: Final answer
    x = 11,956.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.