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Finding the Fourth Proportional to 21,523.81, 32,279.57 and 8,373.11

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Solution

The fourth proportional to 21,523.81, 32,279.57 and 8,373.11 is: 12,557.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,523.81 : 32,279.57 = 8,373.11 : x
  2. Step 2: Convert to fraction form
    21,523.81/32,279.57 = 8,373.11/x
  3. Step 3: Cross multiply
    21,523.81x = 32,279.57 × 8,373.11
  4. Step 4: Simplify right side
    21,523.81x = 270,280,390.36
  5. Step 5: Solve for x
    x = 270,280,390.36/21,523.81
  6. Step 6: Final answer
    x = 12,557.27

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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.