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Finding the Third Proportional to 15,707.25 and 18,461.25

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Solution

The third proportional to 15,707.25 and 18,461.25 is: 21,698.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.25 : 18,461.25 = 18,461.25 : x
  2. Step 2: Convert to fraction form
    15,707.25/18,461.25 = 18,461.25/x
  3. Step 3: Cross multiply
    15,707.25x = 18,461.25 × 18,461.25
  4. Step 4: Simplify right side
    15,707.25x = 340,817,751.56
  5. Step 5: Solve for x
    x = 340,817,751.56/15,707.25
  6. Step 6: Final answer
    x = 21,698.12

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.