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Finding the Fourth Proportional to 17,990.43, 26,979.17 and 7,602.99

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Solution

The fourth proportional to 17,990.43, 26,979.17 and 7,602.99 is: 11,401.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990.43 : 26,979.17 = 7,602.99 : x
  2. Step 2: Convert to fraction form
    17,990.43/26,979.17 = 7,602.99/x
  3. Step 3: Cross multiply
    17,990.43x = 26,979.17 × 7,602.99
  4. Step 4: Simplify right side
    17,990.43x = 205,122,321.70
  5. Step 5: Solve for x
    x = 205,122,321.70/17,990.43
  6. Step 6: Final answer
    x = 11,401.75

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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.