Home / 31,874.10-43,983.18-18,442.68

Finding the Fourth Proportional to 31,874.10, 43,983.18 and 18,442.68

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Solution

The fourth proportional to 31,874.10, 43,983.18 and 18,442.68 is: 25,449.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,874.10 : 43,983.18 = 18,442.68 : x
  2. Step 2: Convert to fraction form
    31,874.10/43,983.18 = 18,442.68/x
  3. Step 3: Cross multiply
    31,874.10x = 43,983.18 × 18,442.68
  4. Step 4: Simplify right side
    31,874.10x = 811,167,714.12
  5. Step 5: Solve for x
    x = 811,167,714.12/31,874.10
  6. Step 6: Final answer
    x = 25,449.12

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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.