Home / 31,431.70-43,372.10-18,002.14

Finding the Fourth Proportional to 31,431.70, 43,372.10 and 18,002.14

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Solution

The fourth proportional to 31,431.70, 43,372.10 and 18,002.14 is: 24,840.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.70 : 43,372.10 = 18,002.14 : x
  2. Step 2: Convert to fraction form
    31,431.70/43,372.10 = 18,002.14/x
  3. Step 3: Cross multiply
    31,431.70x = 43,372.10 × 18,002.14
  4. Step 4: Simplify right side
    31,431.70x = 780,790,616.29
  5. Step 5: Solve for x
    x = 780,790,616.29/31,431.70
  6. Step 6: Final answer
    x = 24,840.86

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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.