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Finding the Fourth Proportional to 11,452.66, 15,790.76 and 8,901.16

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Solution

The fourth proportional to 11,452.66, 15,790.76 and 8,901.16 is: 12,272.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,452.66 : 15,790.76 = 8,901.16 : x
  2. Step 2: Convert to fraction form
    11,452.66/15,790.76 = 8,901.16/x
  3. Step 3: Cross multiply
    11,452.66x = 15,790.76 × 8,901.16
  4. Step 4: Simplify right side
    11,452.66x = 140,556,081.28
  5. Step 5: Solve for x
    x = 140,556,081.28/11,452.66
  6. Step 6: Final answer
    x = 12,272.79

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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.