Home / 31,375.29-47,072.15-12,645.71

Finding the Fourth Proportional to 31,375.29, 47,072.15 and 12,645.71

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Solution

The fourth proportional to 31,375.29, 47,072.15 and 12,645.71 is: 18,972.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,375.29 : 47,072.15 = 12,645.71 : x
  2. Step 2: Convert to fraction form
    31,375.29/47,072.15 = 12,645.71/x
  3. Step 3: Cross multiply
    31,375.29x = 47,072.15 × 12,645.71
  4. Step 4: Simplify right side
    31,375.29x = 595,260,459.39
  5. Step 5: Solve for x
    x = 595,260,459.39/31,375.29
  6. Step 6: Final answer
    x = 18,972.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.