Home / 31,551.92-47,272.16-28,119.68

Finding the Fourth Proportional to 31,551.92, 47,272.16 and 28,119.68

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Solution

The fourth proportional to 31,551.92, 47,272.16 and 28,119.68 is: 42,129.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,551.92 : 47,272.16 = 28,119.68 : x
  2. Step 2: Convert to fraction form
    31,551.92/47,272.16 = 28,119.68/x
  3. Step 3: Cross multiply
    31,551.92x = 47,272.16 × 28,119.68
  4. Step 4: Simplify right side
    31,551.92x = 1,329,278,012.11
  5. Step 5: Solve for x
    x = 1,329,278,012.11/31,551.92
  6. Step 6: Final answer
    x = 42,129.86

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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.