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Finding the Third Proportional to 8,315.88 and 12,560.13

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Solution

The third proportional to 8,315.88 and 12,560.13 is: 18,970.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.88 : 12,560.13 = 12,560.13 : x
  2. Step 2: Convert to fraction form
    8,315.88/12,560.13 = 12,560.13/x
  3. Step 3: Cross multiply
    8,315.88x = 12,560.13 × 12,560.13
  4. Step 4: Simplify right side
    8,315.88x = 157,756,740.02
  5. Step 5: Solve for x
    x = 157,756,740.02/8,315.88
  6. Step 6: Final answer
    x = 18,970.55

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.