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Finding the Third Proportional to 8,621.28 and 13,354.08

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Solution

The third proportional to 8,621.28 and 13,354.08 is: 20,685.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.28 : 13,354.08 = 13,354.08 : x
  2. Step 2: Convert to fraction form
    8,621.28/13,354.08 = 13,354.08/x
  3. Step 3: Cross multiply
    8,621.28x = 13,354.08 × 13,354.08
  4. Step 4: Simplify right side
    8,621.28x = 178,331,559.06
  5. Step 5: Solve for x
    x = 178,331,559.06/8,621.28
  6. Step 6: Final answer
    x = 20,685.05

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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.