Home / 11,325.60-15,612.88-8,176.80

Finding the Fourth Proportional to 11,325.60, 15,612.88 and 8,176.80

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Solution

The fourth proportional to 11,325.60, 15,612.88 and 8,176.80 is: 11,272.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,325.60 : 15,612.88 = 8,176.80 : x
  2. Step 2: Convert to fraction form
    11,325.60/15,612.88 = 8,176.80/x
  3. Step 3: Cross multiply
    11,325.60x = 15,612.88 × 8,176.80
  4. Step 4: Simplify right side
    11,325.60x = 127,663,397.18
  5. Step 5: Solve for x
    x = 127,663,397.18/11,325.60
  6. Step 6: Final answer
    x = 11,272.11

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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.