Home / 11,319.28-15,609.72-8,797.78

Finding the Fourth Proportional to 11,319.28, 15,609.72 and 8,797.78

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Solution

The fourth proportional to 11,319.28, 15,609.72 and 8,797.78 is: 12,132.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.28 : 15,609.72 = 8,797.78 : x
  2. Step 2: Convert to fraction form
    11,319.28/15,609.72 = 8,797.78/x
  3. Step 3: Cross multiply
    11,319.28x = 15,609.72 × 8,797.78
  4. Step 4: Simplify right side
    11,319.28x = 137,330,882.42
  5. Step 5: Solve for x
    x = 137,330,882.42/11,319.28
  6. Step 6: Final answer
    x = 12,132.48

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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.