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Finding the Third Proportional to 9,678.50 and 14,480

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Solution

The third proportional to 9,678.50 and 14,480 is: 21,663.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,678.50 : 14,480 = 14,480 : x
  2. Step 2: Convert to fraction form
    9,678.50/14,480 = 14,480/x
  3. Step 3: Cross multiply
    9,678.50x = 14,480 × 14,480
  4. Step 4: Simplify right side
    9,678.50x = 209,670,400
  5. Step 5: Solve for x
    x = 209,670,400/9,678.50
  6. Step 6: Final answer
    x = 21,663.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.