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Finding the Third Proportional to 8,931 and 11,749.50

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Solution

The third proportional to 8,931 and 11,749.50 is: 15,457.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931 : 11,749.50 = 11,749.50 : x
  2. Step 2: Convert to fraction form
    8,931/11,749.50 = 11,749.50/x
  3. Step 3: Cross multiply
    8,931x = 11,749.50 × 11,749.50
  4. Step 4: Simplify right side
    8,931x = 138,050,750.25
  5. Step 5: Solve for x
    x = 138,050,750.25/8,931
  6. Step 6: Final answer
    x = 15,457.48

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.