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Finding the Third Proportional to 8,518.50 and 12,854.53

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Solution

The third proportional to 8,518.50 and 12,854.53 is: 19,397.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.50 : 12,854.53 = 12,854.53 : x
  2. Step 2: Convert to fraction form
    8,518.50/12,854.53 = 12,854.53/x
  3. Step 3: Cross multiply
    8,518.50x = 12,854.53 × 12,854.53
  4. Step 4: Simplify right side
    8,518.50x = 165,238,973.66
  5. Step 5: Solve for x
    x = 165,238,973.66/8,518.50
  6. Step 6: Final answer
    x = 19,397.66

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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.