Home / 11,129.20-15,358.28-6,414.96

Finding the Fourth Proportional to 11,129.20, 15,358.28 and 6,414.96

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Solution

The fourth proportional to 11,129.20, 15,358.28 and 6,414.96 is: 8,852.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.20 : 15,358.28 = 6,414.96 : x
  2. Step 2: Convert to fraction form
    11,129.20/15,358.28 = 6,414.96/x
  3. Step 3: Cross multiply
    11,129.20x = 15,358.28 × 6,414.96
  4. Step 4: Simplify right side
    11,129.20x = 98,522,751.87
  5. Step 5: Solve for x
    x = 98,522,751.87/11,129.20
  6. Step 6: Final answer
    x = 8,852.64

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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.