Home / 12,279.13-18,419.14-3,959.26

Finding the Fourth Proportional to 12,279.13, 18,419.14 and 3,959.26

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Solution

The fourth proportional to 12,279.13, 18,419.14 and 3,959.26 is: 5,939.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.13 : 18,419.14 = 3,959.26 : x
  2. Step 2: Convert to fraction form
    12,279.13/18,419.14 = 3,959.26/x
  3. Step 3: Cross multiply
    12,279.13x = 18,419.14 × 3,959.26
  4. Step 4: Simplify right side
    12,279.13x = 72,926,164.24
  5. Step 5: Solve for x
    x = 72,926,164.24/12,279.13
  6. Step 6: Final answer
    x = 5,939.03

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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.