Home / 11,675.40-17,515.62-4,279.92

Finding the Fourth Proportional to 11,675.40, 17,515.62 and 4,279.92

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Solution

The fourth proportional to 11,675.40, 17,515.62 and 4,279.92 is: 6,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,675.40 : 17,515.62 = 4,279.92 : x
  2. Step 2: Convert to fraction form
    11,675.40/17,515.62 = 4,279.92/x
  3. Step 3: Cross multiply
    11,675.40x = 17,515.62 × 4,279.92
  4. Step 4: Simplify right side
    11,675.40x = 74,965,452.35
  5. Step 5: Solve for x
    x = 74,965,452.35/11,675.40
  6. Step 6: Final answer
    x = 6,420.80

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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.