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Finding the Third Proportional to 7,135.50 and 10,981.13

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Solution

The third proportional to 7,135.50 and 10,981.13 is: 16,899.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.50 : 10,981.13 = 10,981.13 : x
  2. Step 2: Convert to fraction form
    7,135.50/10,981.13 = 10,981.13/x
  3. Step 3: Cross multiply
    7,135.50x = 10,981.13 × 10,981.13
  4. Step 4: Simplify right side
    7,135.50x = 120,585,106.27
  5. Step 5: Solve for x
    x = 120,585,106.27/7,135.50
  6. Step 6: Final answer
    x = 16,899.32

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.