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Finding the Fourth Proportional to 17,989.70, 27,020.12 and 10,888.29

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Solution

The fourth proportional to 17,989.70, 27,020.12 and 10,888.29 is: 16,353.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,989.70 : 27,020.12 = 10,888.29 : x
  2. Step 2: Convert to fraction form
    17,989.70/27,020.12 = 10,888.29/x
  3. Step 3: Cross multiply
    17,989.70x = 27,020.12 × 10,888.29
  4. Step 4: Simplify right side
    17,989.70x = 294,202,847.95
  5. Step 5: Solve for x
    x = 294,202,847.95/17,989.70
  6. Step 6: Final answer
    x = 16,353.97

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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.