Home / 22,781.31-34,172.19-7,990.58

Finding the Fourth Proportional to 22,781.31, 34,172.19 and 7,990.58

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Solution

The fourth proportional to 22,781.31, 34,172.19 and 7,990.58 is: 11,985.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,781.31 : 34,172.19 = 7,990.58 : x
  2. Step 2: Convert to fraction form
    22,781.31/34,172.19 = 7,990.58/x
  3. Step 3: Cross multiply
    22,781.31x = 34,172.19 × 7,990.58
  4. Step 4: Simplify right side
    22,781.31x = 273,055,578.02
  5. Step 5: Solve for x
    x = 273,055,578.02/22,781.31
  6. Step 6: Final answer
    x = 11,985.95

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1.5x scale

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.