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Finding the Third Proportional to 8,615.58 and 13,312.79

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Solution

The third proportional to 8,615.58 and 13,312.79 is: 20,570.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.58 : 13,312.79 = 13,312.79 : x
  2. Step 2: Convert to fraction form
    8,615.58/13,312.79 = 13,312.79/x
  3. Step 3: Cross multiply
    8,615.58x = 13,312.79 × 13,312.79
  4. Step 4: Simplify right side
    8,615.58x = 177,230,456.63
  5. Step 5: Solve for x
    x = 177,230,456.63/8,615.58
  6. Step 6: Final answer
    x = 20,570.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.