Home / 31,474.11-43,429.17-18,727.68

Finding the Fourth Proportional to 31,474.11, 43,429.17 and 18,727.68

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Solution

The fourth proportional to 31,474.11, 43,429.17 and 18,727.68 is: 25,841.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,474.11 : 43,429.17 = 18,727.68 : x
  2. Step 2: Convert to fraction form
    31,474.11/43,429.17 = 18,727.68/x
  3. Step 3: Cross multiply
    31,474.11x = 43,429.17 × 18,727.68
  4. Step 4: Simplify right side
    31,474.11x = 813,327,598.43
  5. Step 5: Solve for x
    x = 813,327,598.43/31,474.11
  6. Step 6: Final answer
    x = 25,841.16

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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.