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Finding the Third Proportional to 18,987.75 and 29,531.25

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Solution

The third proportional to 18,987.75 and 29,531.25 is: 45,929.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,987.75 : 29,531.25 = 29,531.25 : x
  2. Step 2: Convert to fraction form
    18,987.75/29,531.25 = 29,531.25/x
  3. Step 3: Cross multiply
    18,987.75x = 29,531.25 × 29,531.25
  4. Step 4: Simplify right side
    18,987.75x = 872,094,726.56
  5. Step 5: Solve for x
    x = 872,094,726.56/18,987.75
  6. Step 6: Final answer
    x = 45,929.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.