Home / 31,531.20-43,518.24-18,962.88

Finding the Fourth Proportional to 31,531.20, 43,518.24 and 18,962.88

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Solution

The fourth proportional to 31,531.20, 43,518.24 and 18,962.88 is: 26,171.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,531.20 : 43,518.24 = 18,962.88 : x
  2. Step 2: Convert to fraction form
    31,531.20/43,518.24 = 18,962.88/x
  3. Step 3: Cross multiply
    31,531.20x = 43,518.24 × 18,962.88
  4. Step 4: Simplify right side
    31,531.20x = 825,231,162.93
  5. Step 5: Solve for x
    x = 825,231,162.93/31,531.20
  6. Step 6: Final answer
    x = 26,171.89

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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.