Home / 10,129.44-15,191.28-4,282.72

Finding the Fourth Proportional to 10,129.44, 15,191.28 and 4,282.72

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Solution

The fourth proportional to 10,129.44, 15,191.28 and 4,282.72 is: 6,422.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.44 : 15,191.28 = 4,282.72 : x
  2. Step 2: Convert to fraction form
    10,129.44/15,191.28 = 4,282.72/x
  3. Step 3: Cross multiply
    10,129.44x = 15,191.28 × 4,282.72
  4. Step 4: Simplify right side
    10,129.44x = 65,059,998.68
  5. Step 5: Solve for x
    x = 65,059,998.68/10,129.44
  6. Step 6: Final answer
    x = 6,422.86

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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.