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Finding the Fourth Proportional to 18,246.30, 27,369.45 and 15,135.90

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Solution

The fourth proportional to 18,246.30, 27,369.45 and 15,135.90 is: 22,703.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,246.30 : 27,369.45 = 15,135.90 : x
  2. Step 2: Convert to fraction form
    18,246.30/27,369.45 = 15,135.90/x
  3. Step 3: Cross multiply
    18,246.30x = 27,369.45 × 15,135.90
  4. Step 4: Simplify right side
    18,246.30x = 414,261,258.26
  5. Step 5: Solve for x
    x = 414,261,258.26/18,246.30
  6. Step 6: Final answer
    x = 22,703.85

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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.