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Finding the Fourth Proportional to 17,990.66, 26,989.11 and 5,510.39

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Solution

The fourth proportional to 17,990.66, 26,989.11 and 5,510.39 is: 8,266.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990.66 : 26,989.11 = 5,510.39 : x
  2. Step 2: Convert to fraction form
    17,990.66/26,989.11 = 5,510.39/x
  3. Step 3: Cross multiply
    17,990.66x = 26,989.11 × 5,510.39
  4. Step 4: Simplify right side
    17,990.66x = 148,720,521.85
  5. Step 5: Solve for x
    x = 148,720,521.85/17,990.66
  6. Step 6: Final answer
    x = 8,266.54

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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.