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Finding the Fourth Proportional to 27,879, 38,473.04 and 15,304.56

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Solution

The fourth proportional to 27,879, 38,473.04 and 15,304.56 is: 21,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,879 : 38,473.04 = 15,304.56 : x
  2. Step 2: Convert to fraction form
    27,879/38,473.04 = 15,304.56/x
  3. Step 3: Cross multiply
    27,879x = 38,473.04 × 15,304.56
  4. Step 4: Simplify right side
    27,879x = 588,812,949.06
  5. Step 5: Solve for x
    x = 588,812,949.06/27,879
  6. Step 6: Final answer
    x = 21,120.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.