Home / 21,230.24-31,839.90-8,753.81

Finding the Fourth Proportional to 21,230.24, 31,839.90 and 8,753.81

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Solution

The fourth proportional to 21,230.24, 31,839.90 and 8,753.81 is: 13,128.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.24 : 31,839.90 = 8,753.81 : x
  2. Step 2: Convert to fraction form
    21,230.24/31,839.90 = 8,753.81/x
  3. Step 3: Cross multiply
    21,230.24x = 31,839.90 × 8,753.81
  4. Step 4: Simplify right side
    21,230.24x = 278,720,435.02
  5. Step 5: Solve for x
    x = 278,720,435.02/21,230.24
  6. Step 6: Final answer
    x = 13,128.46

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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.