Home / 10,279.30-15,422.55-3,705.70

Finding the Fourth Proportional to 10,279.30, 15,422.55 and 3,705.70

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Solution

The fourth proportional to 10,279.30, 15,422.55 and 3,705.70 is: 5,559.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,279.30 : 15,422.55 = 3,705.70 : x
  2. Step 2: Convert to fraction form
    10,279.30/15,422.55 = 3,705.70/x
  3. Step 3: Cross multiply
    10,279.30x = 15,422.55 × 3,705.70
  4. Step 4: Simplify right side
    10,279.30x = 57,151,343.54
  5. Step 5: Solve for x
    x = 57,151,343.54/10,279.30
  6. Step 6: Final answer
    x = 5,559.85

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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.