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Finding the Fourth Proportional to 8,969.47, 13,437.97 and 5,015.99

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Solution

The fourth proportional to 8,969.47, 13,437.97 and 5,015.99 is: 7,514.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,969.47 : 13,437.97 = 5,015.99 : x
  2. Step 2: Convert to fraction form
    8,969.47/13,437.97 = 5,015.99/x
  3. Step 3: Cross multiply
    8,969.47x = 13,437.97 × 5,015.99
  4. Step 4: Simplify right side
    8,969.47x = 67,404,723.14
  5. Step 5: Solve for x
    x = 67,404,723.14/8,969.47
  6. Step 6: Final answer
    x = 7,514.91

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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.