Home / 11,279.40-15,565.18-6,243.60

Finding the Fourth Proportional to 11,279.40, 15,565.18 and 6,243.60

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Solution

The fourth proportional to 11,279.40, 15,565.18 and 6,243.60 is: 8,615.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.40 : 15,565.18 = 6,243.60 : x
  2. Step 2: Convert to fraction form
    11,279.40/15,565.18 = 6,243.60/x
  3. Step 3: Cross multiply
    11,279.40x = 15,565.18 × 6,243.60
  4. Step 4: Simplify right side
    11,279.40x = 97,182,757.85
  5. Step 5: Solve for x
    x = 97,182,757.85/11,279.40
  6. Step 6: Final answer
    x = 8,615.95

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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.