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Finding the Fourth Proportional to 11,865.52, 17,802.52 and 5,291.12

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Solution

The fourth proportional to 11,865.52, 17,802.52 and 5,291.12 is: 7,938.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,865.52 : 17,802.52 = 5,291.12 : x
  2. Step 2: Convert to fraction form
    11,865.52/17,802.52 = 5,291.12/x
  3. Step 3: Cross multiply
    11,865.52x = 17,802.52 × 5,291.12
  4. Step 4: Simplify right side
    11,865.52x = 94,195,269.62
  5. Step 5: Solve for x
    x = 94,195,269.62/11,865.52
  6. Step 6: Final answer
    x = 7,938.57

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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.