Home / 18,292.20-27,438.30-18,138.60

Finding the Fourth Proportional to 18,292.20, 27,438.30 and 18,138.60

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Solution

The fourth proportional to 18,292.20, 27,438.30 and 18,138.60 is: 27,207.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,292.20 : 27,438.30 = 18,138.60 : x
  2. Step 2: Convert to fraction form
    18,292.20/27,438.30 = 18,138.60/x
  3. Step 3: Cross multiply
    18,292.20x = 27,438.30 × 18,138.60
  4. Step 4: Simplify right side
    18,292.20x = 497,692,348.38
  5. Step 5: Solve for x
    x = 497,692,348.38/18,292.20
  6. Step 6: Final answer
    x = 27,207.90

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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.