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Finding the Third Proportional to 8,690,142.50 and 13,147,062.75

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Solution

The third proportional to 8,690,142.50 and 13,147,062.75 is: 19,889,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690,142.50 : 13,147,062.75 = 13,147,062.75 : x
  2. Step 2: Convert to fraction form
    8,690,142.50/13,147,062.75 = 13,147,062.75/x
  3. Step 3: Cross multiply
    8,690,142.50x = 13,147,062.75 × 13,147,062.75
  4. Step 4: Simplify right side
    8,690,142.50x = 172,845,258,952,437.56
  5. Step 5: Solve for x
    x = 172,845,258,952,437.56/8,690,142.50
  6. Step 6: Final answer
    x = 19,889,807.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.