Home / 18,757.20-28,140.92-6,279.28

Finding the Fourth Proportional to 18,757.20, 28,140.92 and 6,279.28

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Solution

The fourth proportional to 18,757.20, 28,140.92 and 6,279.28 is: 9,420.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,757.20 : 28,140.92 = 6,279.28 : x
  2. Step 2: Convert to fraction form
    18,757.20/28,140.92 = 6,279.28/x
  3. Step 3: Cross multiply
    18,757.20x = 28,140.92 × 6,279.28
  4. Step 4: Simplify right side
    18,757.20x = 176,704,716.14
  5. Step 5: Solve for x
    x = 176,704,716.14/18,757.20
  6. Step 6: Final answer
    x = 9,420.63

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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.