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Finding the Fourth Proportional to 18,287.62, 27,431.43 and 4,436.50

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Solution

The fourth proportional to 18,287.62, 27,431.43 and 4,436.50 is: 6,654.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.62 : 27,431.43 = 4,436.50 : x
  2. Step 2: Convert to fraction form
    18,287.62/27,431.43 = 4,436.50/x
  3. Step 3: Cross multiply
    18,287.62x = 27,431.43 × 4,436.50
  4. Step 4: Simplify right side
    18,287.62x = 121,699,539.20
  5. Step 5: Solve for x
    x = 121,699,539.20/18,287.62
  6. Step 6: Final answer
    x = 6,654.75

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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.