Home / 13,251.20-18,279.05-8,274.56

Finding the Fourth Proportional to 13,251.20, 18,279.05 and 8,274.56

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Solution

The fourth proportional to 13,251.20, 18,279.05 and 8,274.56 is: 11,414.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.20 : 18,279.05 = 8,274.56 : x
  2. Step 2: Convert to fraction form
    13,251.20/18,279.05 = 8,274.56/x
  3. Step 3: Cross multiply
    13,251.20x = 18,279.05 × 8,274.56
  4. Step 4: Simplify right side
    13,251.20x = 151,251,100.29
  5. Step 5: Solve for x
    x = 151,251,100.29/13,251.20
  6. Step 6: Final answer
    x = 11,414.14

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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.