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Finding the Fourth Proportional to 18,216.60, 27,324.90 and 15,300.60

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Solution

The fourth proportional to 18,216.60, 27,324.90 and 15,300.60 is: 22,950.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.60 : 27,324.90 = 15,300.60 : x
  2. Step 2: Convert to fraction form
    18,216.60/27,324.90 = 15,300.60/x
  3. Step 3: Cross multiply
    18,216.60x = 27,324.90 × 15,300.60
  4. Step 4: Simplify right side
    18,216.60x = 418,087,364.94
  5. Step 5: Solve for x
    x = 418,087,364.94/18,216.60
  6. Step 6: Final answer
    x = 22,950.90

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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.