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Finding the Third Proportional to 9,918 and 14,512.50

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Solution

The third proportional to 9,918 and 14,512.50 is: 21,235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918 : 14,512.50 = 14,512.50 : x
  2. Step 2: Convert to fraction form
    9,918/14,512.50 = 14,512.50/x
  3. Step 3: Cross multiply
    9,918x = 14,512.50 × 14,512.50
  4. Step 4: Simplify right side
    9,918x = 210,612,656.25
  5. Step 5: Solve for x
    x = 210,612,656.25/9,918
  6. Step 6: Final answer
    x = 21,235.40

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.