Home / 31,515.57-43,488.80-18,086.54

Finding the Fourth Proportional to 31,515.57, 43,488.80 and 18,086.54

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Solution

The fourth proportional to 31,515.57, 43,488.80 and 18,086.54 is: 24,957.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,515.57 : 43,488.80 = 18,086.54 : x
  2. Step 2: Convert to fraction form
    31,515.57/43,488.80 = 18,086.54/x
  3. Step 3: Cross multiply
    31,515.57x = 43,488.80 × 18,086.54
  4. Step 4: Simplify right side
    31,515.57x = 786,561,612.88
  5. Step 5: Solve for x
    x = 786,561,612.88/31,515.57
  6. Step 6: Final answer
    x = 24,957.87

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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.