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Finding the Fourth Proportional to 17,352.45, 26,020.98 and 7,990.20

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Solution

The fourth proportional to 17,352.45, 26,020.98 and 7,990.20 is: 11,981.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,352.45 : 26,020.98 = 7,990.20 : x
  2. Step 2: Convert to fraction form
    17,352.45/26,020.98 = 7,990.20/x
  3. Step 3: Cross multiply
    17,352.45x = 26,020.98 × 7,990.20
  4. Step 4: Simplify right side
    17,352.45x = 207,912,834.40
  5. Step 5: Solve for x
    x = 207,912,834.40/17,352.45
  6. Step 6: Final answer
    x = 11,981.76

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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.