Home / 22,587.20-31,170.24-12,517.28

Finding the Fourth Proportional to 22,587.20, 31,170.24 and 12,517.28

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Solution

The fourth proportional to 22,587.20, 31,170.24 and 12,517.28 is: 17,273.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,587.20 : 31,170.24 = 12,517.28 : x
  2. Step 2: Convert to fraction form
    22,587.20/31,170.24 = 12,517.28/x
  3. Step 3: Cross multiply
    22,587.20x = 31,170.24 × 12,517.28
  4. Step 4: Simplify right side
    22,587.20x = 390,166,621.75
  5. Step 5: Solve for x
    x = 390,166,621.75/22,587.20
  6. Step 6: Final answer
    x = 17,273.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.