Home / 31,375.62-43,305.03-18,807.66

Finding the Fourth Proportional to 31,375.62, 43,305.03 and 18,807.66

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Solution

The fourth proportional to 31,375.62, 43,305.03 and 18,807.66 is: 25,958.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,375.62 : 43,305.03 = 18,807.66 : x
  2. Step 2: Convert to fraction form
    31,375.62/43,305.03 = 18,807.66/x
  3. Step 3: Cross multiply
    31,375.62x = 43,305.03 × 18,807.66
  4. Step 4: Simplify right side
    31,375.62x = 814,466,280.53
  5. Step 5: Solve for x
    x = 814,466,280.53/31,375.62
  6. Step 6: Final answer
    x = 25,958.57

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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.