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Finding the Fourth Proportional to 17,987.46, 26,969.49 and 7,454.61

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Solution

The fourth proportional to 17,987.46, 26,969.49 and 7,454.61 is: 11,177.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,987.46 : 26,969.49 = 7,454.61 : x
  2. Step 2: Convert to fraction form
    17,987.46/26,969.49 = 7,454.61/x
  3. Step 3: Cross multiply
    17,987.46x = 26,969.49 × 7,454.61
  4. Step 4: Simplify right side
    17,987.46x = 201,047,029.85
  5. Step 5: Solve for x
    x = 201,047,029.85/17,987.46
  6. Step 6: Final answer
    x = 11,177.07

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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.