Home / 31,438.92-43,394.91-18,701.07

Finding the Fourth Proportional to 31,438.92, 43,394.91 and 18,701.07

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Solution

The fourth proportional to 31,438.92, 43,394.91 and 18,701.07 is: 25,812.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,438.92 : 43,394.91 = 18,701.07 : x
  2. Step 2: Convert to fraction form
    31,438.92/43,394.91 = 18,701.07/x
  3. Step 3: Cross multiply
    31,438.92x = 43,394.91 × 18,701.07
  4. Step 4: Simplify right side
    31,438.92x = 811,531,249.55
  5. Step 5: Solve for x
    x = 811,531,249.55/31,438.92
  6. Step 6: Final answer
    x = 25,812.95

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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.