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Finding the Fourth Proportional to 18,287.57, 27,428.54 and 5,805.97

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Solution

The fourth proportional to 18,287.57, 27,428.54 and 5,805.97 is: 8,708.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.57 : 27,428.54 = 5,805.97 : x
  2. Step 2: Convert to fraction form
    18,287.57/27,428.54 = 5,805.97/x
  3. Step 3: Cross multiply
    18,287.57x = 27,428.54 × 5,805.97
  4. Step 4: Simplify right side
    18,287.57x = 159,249,182.78
  5. Step 5: Solve for x
    x = 159,249,182.78/18,287.57
  6. Step 6: Final answer
    x = 8,708.05

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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.