Home / 18,279.23-27,390.11-14,129.39

Finding the Fourth Proportional to 18,279.23, 27,390.11 and 14,129.39

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Solution

The fourth proportional to 18,279.23, 27,390.11 and 14,129.39 is: 21,171.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.23 : 27,390.11 = 14,129.39 : x
  2. Step 2: Convert to fraction form
    18,279.23/27,390.11 = 14,129.39/x
  3. Step 3: Cross multiply
    18,279.23x = 27,390.11 × 14,129.39
  4. Step 4: Simplify right side
    18,279.23x = 387,005,544.16
  5. Step 5: Solve for x
    x = 387,005,544.16/18,279.23
  6. Step 6: Final answer
    x = 21,171.88

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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.