Home / 21,126.60-31,687.44-5,545.44

Finding the Fourth Proportional to 21,126.60, 31,687.44 and 5,545.44

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Solution

The fourth proportional to 21,126.60, 31,687.44 and 5,545.44 is: 8,317.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.60 : 31,687.44 = 5,545.44 : x
  2. Step 2: Convert to fraction form
    21,126.60/31,687.44 = 5,545.44/x
  3. Step 3: Cross multiply
    21,126.60x = 31,687.44 × 5,545.44
  4. Step 4: Simplify right side
    21,126.60x = 175,720,797.27
  5. Step 5: Solve for x
    x = 175,720,797.27/21,126.60
  6. Step 6: Final answer
    x = 8,317.51

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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.