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Finding the Fourth Proportional to 15,080.26, 20,810.76 and 8,791.42

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Solution

The fourth proportional to 15,080.26, 20,810.76 and 8,791.42 is: 12,132.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,080.26 : 20,810.76 = 8,791.42 : x
  2. Step 2: Convert to fraction form
    15,080.26/20,810.76 = 8,791.42/x
  3. Step 3: Cross multiply
    15,080.26x = 20,810.76 × 8,791.42
  4. Step 4: Simplify right side
    15,080.26x = 182,956,131.68
  5. Step 5: Solve for x
    x = 182,956,131.68/15,080.26
  6. Step 6: Final answer
    x = 12,132.16

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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.