Home / 31,372.18-43,293.35-18,631.62

Finding the Fourth Proportional to 31,372.18, 43,293.35 and 18,631.62

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Solution

The fourth proportional to 31,372.18, 43,293.35 and 18,631.62 is: 25,711.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,372.18 : 43,293.35 = 18,631.62 : x
  2. Step 2: Convert to fraction form
    31,372.18/43,293.35 = 18,631.62/x
  3. Step 3: Cross multiply
    31,372.18x = 43,293.35 × 18,631.62
  4. Step 4: Simplify right side
    31,372.18x = 806,625,292.31
  5. Step 5: Solve for x
    x = 806,625,292.31/31,372.18
  6. Step 6: Final answer
    x = 25,711.49

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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.