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Finding the Fourth Proportional to 18,133.61, 27,208.78 and 8,275.91

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Solution

The fourth proportional to 18,133.61, 27,208.78 and 8,275.91 is: 12,417.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,133.61 : 27,208.78 = 8,275.91 : x
  2. Step 2: Convert to fraction form
    18,133.61/27,208.78 = 8,275.91/x
  3. Step 3: Cross multiply
    18,133.61x = 27,208.78 × 8,275.91
  4. Step 4: Simplify right side
    18,133.61x = 225,177,414.49
  5. Step 5: Solve for x
    x = 225,177,414.49/18,133.61
  6. Step 6: Final answer
    x = 12,417.68

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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.