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Finding the Fourth Proportional to 18,442.50, 27,637.17 and 10,520.60

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Solution

The fourth proportional to 18,442.50, 27,637.17 and 10,520.60 is: 15,765.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,442.50 : 27,637.17 = 10,520.60 : x
  2. Step 2: Convert to fraction form
    18,442.50/27,637.17 = 10,520.60/x
  3. Step 3: Cross multiply
    18,442.50x = 27,637.17 × 10,520.60
  4. Step 4: Simplify right side
    18,442.50x = 290,759,433.06
  5. Step 5: Solve for x
    x = 290,759,433.06/18,442.50
  6. Step 6: Final answer
    x = 15,765.73

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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.