Home / 22,591.40-31,157.72-15,899.20

Finding the Fourth Proportional to 22,591.40, 31,157.72 and 15,899.20

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Solution

The fourth proportional to 22,591.40, 31,157.72 and 15,899.20 is: 21,927.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,591.40 : 31,157.72 = 15,899.20 : x
  2. Step 2: Convert to fraction form
    22,591.40/31,157.72 = 15,899.20/x
  3. Step 3: Cross multiply
    22,591.40x = 31,157.72 × 15,899.20
  4. Step 4: Simplify right side
    22,591.40x = 495,382,821.82
  5. Step 5: Solve for x
    x = 495,382,821.82/22,591.40
  6. Step 6: Final answer
    x = 21,927.94

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Similar ratio
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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.