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Finding the Third Proportional to 10,872,432.75 and 15,208,436.25

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Solution

The third proportional to 10,872,432.75 and 15,208,436.25 is: 21,273,668.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,872,432.75 : 15,208,436.25 = 15,208,436.25 : x
  2. Step 2: Convert to fraction form
    10,872,432.75/15,208,436.25 = 15,208,436.25/x
  3. Step 3: Cross multiply
    10,872,432.75x = 15,208,436.25 × 15,208,436.25
  4. Step 4: Simplify right side
    10,872,432.75x = 231,296,533,170,314.06
  5. Step 5: Solve for x
    x = 231,296,533,170,314.06/10,872,432.75
  6. Step 6: Final answer
    x = 21,273,668.78

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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.