Home / 21,229.24-31,838.40-8,752.81

Finding the Fourth Proportional to 21,229.24, 31,838.40 and 8,752.81

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Solution

The fourth proportional to 21,229.24, 31,838.40 and 8,752.81 is: 13,126.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.24 : 31,838.40 = 8,752.81 : x
  2. Step 2: Convert to fraction form
    21,229.24/31,838.40 = 8,752.81/x
  3. Step 3: Cross multiply
    21,229.24x = 31,838.40 × 8,752.81
  4. Step 4: Simplify right side
    21,229.24x = 278,675,465.90
  5. Step 5: Solve for x
    x = 278,675,465.90/21,229.24
  6. Step 6: Final answer
    x = 13,126.96

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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.