Home / 31,425.60-43,371.12-18,001.20

Finding the Fourth Proportional to 31,425.60, 43,371.12 and 18,001.20

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Solution

The fourth proportional to 31,425.60, 43,371.12 and 18,001.20 is: 24,843.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,425.60 : 43,371.12 = 18,001.20 : x
  2. Step 2: Convert to fraction form
    31,425.60/43,371.12 = 18,001.20/x
  3. Step 3: Cross multiply
    31,425.60x = 43,371.12 × 18,001.20
  4. Step 4: Simplify right side
    31,425.60x = 780,732,205.34
  5. Step 5: Solve for x
    x = 780,732,205.34/31,425.60
  6. Step 6: Final answer
    x = 24,843.83

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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.