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Finding the Fourth Proportional to 18,490.69, 27,736.04 and 16,886.89

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Solution

The fourth proportional to 18,490.69, 27,736.04 and 16,886.89 is: 25,330.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,490.69 : 27,736.04 = 16,886.89 : x
  2. Step 2: Convert to fraction form
    18,490.69/27,736.04 = 16,886.89/x
  3. Step 3: Cross multiply
    18,490.69x = 27,736.04 × 16,886.89
  4. Step 4: Simplify right side
    18,490.69x = 468,375,456.52
  5. Step 5: Solve for x
    x = 468,375,456.52/18,490.69
  6. Step 6: Final answer
    x = 25,330.34

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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.