Home / 20,031.87-27,641.57-11,078.15

Finding the Fourth Proportional to 20,031.87, 27,641.57 and 11,078.15

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Solution

The fourth proportional to 20,031.87, 27,641.57 and 11,078.15 is: 15,286.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.87 : 27,641.57 = 11,078.15 : x
  2. Step 2: Convert to fraction form
    20,031.87/27,641.57 = 11,078.15/x
  3. Step 3: Cross multiply
    20,031.87x = 27,641.57 × 11,078.15
  4. Step 4: Simplify right side
    20,031.87x = 306,217,458.70
  5. Step 5: Solve for x
    x = 306,217,458.70/20,031.87
  6. Step 6: Final answer
    x = 15,286.51

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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.