Home / 18,211.18-27,327.39-7,680.55

Finding the Fourth Proportional to 18,211.18, 27,327.39 and 7,680.55

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Solution

The fourth proportional to 18,211.18, 27,327.39 and 7,680.55 is: 11,525.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.18 : 27,327.39 = 7,680.55 : x
  2. Step 2: Convert to fraction form
    18,211.18/27,327.39 = 7,680.55/x
  3. Step 3: Cross multiply
    18,211.18x = 27,327.39 × 7,680.55
  4. Step 4: Simplify right side
    18,211.18x = 209,889,385.26
  5. Step 5: Solve for x
    x = 209,889,385.26/18,211.18
  6. Step 6: Final answer
    x = 11,525.30

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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.