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Finding the Third Proportional to 15,330.56 and 20,602.31

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Solution

The third proportional to 15,330.56 and 20,602.31 is: 27,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.56 : 20,602.31 = 20,602.31 : x
  2. Step 2: Convert to fraction form
    15,330.56/20,602.31 = 20,602.31/x
  3. Step 3: Cross multiply
    15,330.56x = 20,602.31 × 20,602.31
  4. Step 4: Simplify right side
    15,330.56x = 424,455,280.35
  5. Step 5: Solve for x
    x = 424,455,280.35/15,330.56
  6. Step 6: Final answer
    x = 27,686.87

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.