Home / 21,553.83-32,318.19-18,065.43

Finding the Fourth Proportional to 21,553.83, 32,318.19 and 18,065.43

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Solution

The fourth proportional to 21,553.83, 32,318.19 and 18,065.43 is: 27,087.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,553.83 : 32,318.19 = 18,065.43 : x
  2. Step 2: Convert to fraction form
    21,553.83/32,318.19 = 18,065.43/x
  3. Step 3: Cross multiply
    21,553.83x = 32,318.19 × 18,065.43
  4. Step 4: Simplify right side
    21,553.83x = 583,841,999.17
  5. Step 5: Solve for x
    x = 583,841,999.17/21,553.83
  6. Step 6: Final answer
    x = 27,087.62

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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.