Home / 11,115.20-16,672.80-5,585.60

Finding the Fourth Proportional to 11,115.20, 16,672.80 and 5,585.60

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Solution

The fourth proportional to 11,115.20, 16,672.80 and 5,585.60 is: 8,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,115.20 : 16,672.80 = 5,585.60 : x
  2. Step 2: Convert to fraction form
    11,115.20/16,672.80 = 5,585.60/x
  3. Step 3: Cross multiply
    11,115.20x = 16,672.80 × 5,585.60
  4. Step 4: Simplify right side
    11,115.20x = 93,127,591.68
  5. Step 5: Solve for x
    x = 93,127,591.68/11,115.20
  6. Step 6: Final answer
    x = 8,378.40

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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.