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Finding the Third Proportional to 11,475 and 15,430.50

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Solution

The third proportional to 11,475 and 15,430.50 is: 20,749.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,475 : 15,430.50 = 15,430.50 : x
  2. Step 2: Convert to fraction form
    11,475/15,430.50 = 15,430.50/x
  3. Step 3: Cross multiply
    11,475x = 15,430.50 × 15,430.50
  4. Step 4: Simplify right side
    11,475x = 238,100,330.25
  5. Step 5: Solve for x
    x = 238,100,330.25/11,475
  6. Step 6: Final answer
    x = 20,749.48

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.