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Finding the Fourth Proportional to 17,998.40, 26,954.40 and 14,542.40

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Solution

The fourth proportional to 17,998.40, 26,954.40 and 14,542.40 is: 21,778.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,998.40 : 26,954.40 = 14,542.40 : x
  2. Step 2: Convert to fraction form
    17,998.40/26,954.40 = 14,542.40/x
  3. Step 3: Cross multiply
    17,998.40x = 26,954.40 × 14,542.40
  4. Step 4: Simplify right side
    17,998.40x = 391,981,666.56
  5. Step 5: Solve for x
    x = 391,981,666.56/17,998.40
  6. Step 6: Final answer
    x = 21,778.70

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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.