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Finding the Third Proportional to 20,455.88 and 27,767.81

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Solution

The third proportional to 20,455.88 and 27,767.81 is: 37,693.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.88 : 27,767.81 = 27,767.81 : x
  2. Step 2: Convert to fraction form
    20,455.88/27,767.81 = 27,767.81/x
  3. Step 3: Cross multiply
    20,455.88x = 27,767.81 × 27,767.81
  4. Step 4: Simplify right side
    20,455.88x = 771,051,411.04
  5. Step 5: Solve for x
    x = 771,051,411.04/20,455.88
  6. Step 6: Final answer
    x = 37,693.40

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.