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Finding the Third Proportional to 21,120.75 and 29,527.88

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Solution

The third proportional to 21,120.75 and 29,527.88 is: 41,281.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,120.75 : 29,527.88 = 29,527.88 : x
  2. Step 2: Convert to fraction form
    21,120.75/29,527.88 = 29,527.88/x
  3. Step 3: Cross multiply
    21,120.75x = 29,527.88 × 29,527.88
  4. Step 4: Simplify right side
    21,120.75x = 871,895,402.02
  5. Step 5: Solve for x
    x = 871,895,402.02/21,120.75
  6. Step 6: Final answer
    x = 41,281.46

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.