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Finding the Third Proportional to 15,015.38 and 20,827.13

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Solution

The third proportional to 15,015.38 and 20,827.13 is: 28,888.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.38 : 20,827.13 = 20,827.13 : x
  2. Step 2: Convert to fraction form
    15,015.38/20,827.13 = 20,827.13/x
  3. Step 3: Cross multiply
    15,015.38x = 20,827.13 × 20,827.13
  4. Step 4: Simplify right side
    15,015.38x = 433,769,135.77
  5. Step 5: Solve for x
    x = 433,769,135.77/15,015.38
  6. Step 6: Final answer
    x = 28,888.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.