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Finding the Fourth Proportional to 18,579.88, 27,869.46 and 4,540

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Solution

The fourth proportional to 18,579.88, 27,869.46 and 4,540 is: 6,809.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.88 : 27,869.46 = 4,540 : x
  2. Step 2: Convert to fraction form
    18,579.88/27,869.46 = 4,540/x
  3. Step 3: Cross multiply
    18,579.88x = 27,869.46 × 4,540
  4. Step 4: Simplify right side
    18,579.88x = 126,527,348.40
  5. Step 5: Solve for x
    x = 126,527,348.40/18,579.88
  6. Step 6: Final answer
    x = 6,809.91

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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.