Home / 31,200.72-43,057.08-18,625.20

Finding the Fourth Proportional to 31,200.72, 43,057.08 and 18,625.20

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Solution

The fourth proportional to 31,200.72, 43,057.08 and 18,625.20 is: 25,702.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,200.72 : 43,057.08 = 18,625.20 : x
  2. Step 2: Convert to fraction form
    31,200.72/43,057.08 = 18,625.20/x
  3. Step 3: Cross multiply
    31,200.72x = 43,057.08 × 18,625.20
  4. Step 4: Simplify right side
    31,200.72x = 801,946,726.42
  5. Step 5: Solve for x
    x = 801,946,726.42/31,200.72
  6. Step 6: Final answer
    x = 25,702.83

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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.