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Finding the Fourth Proportional to 18,512.08, 27,767.88 and 4,472

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Solution

The fourth proportional to 18,512.08, 27,767.88 and 4,472 is: 6,707.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.08 : 27,767.88 = 4,472 : x
  2. Step 2: Convert to fraction form
    18,512.08/27,767.88 = 4,472/x
  3. Step 3: Cross multiply
    18,512.08x = 27,767.88 × 4,472
  4. Step 4: Simplify right side
    18,512.08x = 124,177,959.36
  5. Step 5: Solve for x
    x = 124,177,959.36/18,512.08
  6. Step 6: Final answer
    x = 6,707.94

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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.