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Finding the Fourth Proportional to 18,893.40, 28,481.61 and 17,624.76

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Solution

The fourth proportional to 18,893.40, 28,481.61 and 17,624.76 is: 26,569.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,893.40 : 28,481.61 = 17,624.76 : x
  2. Step 2: Convert to fraction form
    18,893.40/28,481.61 = 17,624.76/x
  3. Step 3: Cross multiply
    18,893.40x = 28,481.61 × 17,624.76
  4. Step 4: Simplify right side
    18,893.40x = 501,981,540.66
  5. Step 5: Solve for x
    x = 501,981,540.66/18,893.40
  6. Step 6: Final answer
    x = 26,569.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.