Home / 12,186.47-18,279.71-4,395.29

Finding the Fourth Proportional to 12,186.47, 18,279.71 and 4,395.29

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Solution

The fourth proportional to 12,186.47, 18,279.71 and 4,395.29 is: 6,592.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.47 : 18,279.71 = 4,395.29 : x
  2. Step 2: Convert to fraction form
    12,186.47/18,279.71 = 4,395.29/x
  3. Step 3: Cross multiply
    12,186.47x = 18,279.71 × 4,395.29
  4. Step 4: Simplify right side
    12,186.47x = 80,344,535.17
  5. Step 5: Solve for x
    x = 80,344,535.17/12,186.47
  6. Step 6: Final answer
    x = 6,592.93

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Similar ratio
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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.