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Finding the Fourth Proportional to 15,110.55, 20,851.97 and 8,736.12

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Solution

The fourth proportional to 15,110.55, 20,851.97 and 8,736.12 is: 12,055.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,110.55 : 20,851.97 = 8,736.12 : x
  2. Step 2: Convert to fraction form
    15,110.55/20,851.97 = 8,736.12/x
  3. Step 3: Cross multiply
    15,110.55x = 20,851.97 × 8,736.12
  4. Step 4: Simplify right side
    15,110.55x = 182,165,268.48
  5. Step 5: Solve for x
    x = 182,165,268.48/15,110.55
  6. Step 6: Final answer
    x = 12,055.50

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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.