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Finding the Third Proportional to 20,916.56 and 29,256.19

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Solution

The third proportional to 20,916.56 and 29,256.19 is: 40,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.56 : 29,256.19 = 29,256.19 : x
  2. Step 2: Convert to fraction form
    20,916.56/29,256.19 = 29,256.19/x
  3. Step 3: Cross multiply
    20,916.56x = 29,256.19 × 29,256.19
  4. Step 4: Simplify right side
    20,916.56x = 855,924,507.04
  5. Step 5: Solve for x
    x = 855,924,507.04/20,916.56
  6. Step 6: Final answer
    x = 40,920.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.