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Finding the Fourth Proportional to 21,602.68, 32,347.97 and 18,502.61

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Solution

The fourth proportional to 21,602.68, 32,347.97 and 18,502.61 is: 27,705.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,602.68 : 32,347.97 = 18,502.61 : x
  2. Step 2: Convert to fraction form
    21,602.68/32,347.97 = 18,502.61/x
  3. Step 3: Cross multiply
    21,602.68x = 32,347.97 × 18,502.61
  4. Step 4: Simplify right side
    21,602.68x = 598,521,873.20
  5. Step 5: Solve for x
    x = 598,521,873.20/21,602.68
  6. Step 6: Final answer
    x = 27,705.91

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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.