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Finding the Fourth Proportional to 18,287.57, 27,431.36 and 4,436.57

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Solution

The fourth proportional to 18,287.57, 27,431.36 and 4,436.57 is: 6,654.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.57 : 27,431.36 = 4,436.57 : x
  2. Step 2: Convert to fraction form
    18,287.57/27,431.36 = 4,436.57/x
  3. Step 3: Cross multiply
    18,287.57x = 27,431.36 × 4,436.57
  4. Step 4: Simplify right side
    18,287.57x = 121,700,989.50
  5. Step 5: Solve for x
    x = 121,700,989.50/18,287.57
  6. Step 6: Final answer
    x = 6,654.85

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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.