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Finding the Fourth Proportional to 10,480.53, 15,721.11 and 4,243.53

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Solution

The fourth proportional to 10,480.53, 15,721.11 and 4,243.53 is: 6,365.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,480.53 : 15,721.11 = 4,243.53 : x
  2. Step 2: Convert to fraction form
    10,480.53/15,721.11 = 4,243.53/x
  3. Step 3: Cross multiply
    10,480.53x = 15,721.11 × 4,243.53
  4. Step 4: Simplify right side
    10,480.53x = 66,713,001.92
  5. Step 5: Solve for x
    x = 66,713,001.92/10,480.53
  6. Step 6: Final answer
    x = 6,365.42

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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.