Home / 31,915.20-43,997.28-22,454.40

Finding the Fourth Proportional to 31,915.20, 43,997.28 and 22,454.40

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Solution

The fourth proportional to 31,915.20, 43,997.28 and 22,454.40 is: 30,954.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,915.20 : 43,997.28 = 22,454.40 : x
  2. Step 2: Convert to fraction form
    31,915.20/43,997.28 = 22,454.40/x
  3. Step 3: Cross multiply
    31,915.20x = 43,997.28 × 22,454.40
  4. Step 4: Simplify right side
    31,915.20x = 987,932,524.03
  5. Step 5: Solve for x
    x = 987,932,524.03/31,915.20
  6. Step 6: Final answer
    x = 30,954.92

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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.