Home / 12,188.18-18,279.44-3,866.64

Finding the Fourth Proportional to 12,188.18, 18,279.44 and 3,866.64

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Solution

The fourth proportional to 12,188.18, 18,279.44 and 3,866.64 is: 5,799.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.18 : 18,279.44 = 3,866.64 : x
  2. Step 2: Convert to fraction form
    12,188.18/18,279.44 = 3,866.64/x
  3. Step 3: Cross multiply
    12,188.18x = 18,279.44 × 3,866.64
  4. Step 4: Simplify right side
    12,188.18x = 70,680,013.88
  5. Step 5: Solve for x
    x = 70,680,013.88/12,188.18
  6. Step 6: Final answer
    x = 5,799.06

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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.