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Finding the Fourth Proportional to 17,687.28, 26,493.48 and 12,114.48

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Solution

The fourth proportional to 17,687.28, 26,493.48 and 12,114.48 is: 18,146.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,687.28 : 26,493.48 = 12,114.48 : x
  2. Step 2: Convert to fraction form
    17,687.28/26,493.48 = 12,114.48/x
  3. Step 3: Cross multiply
    17,687.28x = 26,493.48 × 12,114.48
  4. Step 4: Simplify right side
    17,687.28x = 320,954,733.59
  5. Step 5: Solve for x
    x = 320,954,733.59/17,687.28
  6. Step 6: Final answer
    x = 18,146.08

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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.