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Finding the Third Proportional to 12,931.31 and 19,473.75

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Solution

The third proportional to 12,931.31 and 19,473.75 is: 29,326.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.31 : 19,473.75 = 19,473.75 : x
  2. Step 2: Convert to fraction form
    12,931.31/19,473.75 = 19,473.75/x
  3. Step 3: Cross multiply
    12,931.31x = 19,473.75 × 19,473.75
  4. Step 4: Simplify right side
    12,931.31x = 379,226,939.06
  5. Step 5: Solve for x
    x = 379,226,939.06/12,931.31
  6. Step 6: Final answer
    x = 29,326.25

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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.