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Finding the Third Proportional to 10,678.50 and 15,666.75

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Solution

The third proportional to 10,678.50 and 15,666.75 is: 22,985.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,678.50 : 15,666.75 = 15,666.75 : x
  2. Step 2: Convert to fraction form
    10,678.50/15,666.75 = 15,666.75/x
  3. Step 3: Cross multiply
    10,678.50x = 15,666.75 × 15,666.75
  4. Step 4: Simplify right side
    10,678.50x = 245,447,055.56
  5. Step 5: Solve for x
    x = 245,447,055.56/10,678.50
  6. Step 6: Final answer
    x = 22,985.16

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.