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Finding the Third Proportional to 12,889.13 and 19,374.19

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Solution

The third proportional to 12,889.13 and 19,374.19 is: 29,122.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.13 : 19,374.19 = 19,374.19 : x
  2. Step 2: Convert to fraction form
    12,889.13/19,374.19 = 19,374.19/x
  3. Step 3: Cross multiply
    12,889.13x = 19,374.19 × 19,374.19
  4. Step 4: Simplify right side
    12,889.13x = 375,359,141.29
  5. Step 5: Solve for x
    x = 375,359,141.29/12,889.13
  6. Step 6: Final answer
    x = 29,122.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.