Home / 11,319.85-16,979.02-3,422.66

Finding the Fourth Proportional to 11,319.85, 16,979.02 and 3,422.66

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Solution

The fourth proportional to 11,319.85, 16,979.02 and 3,422.66 is: 5,133.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.85 : 16,979.02 = 3,422.66 : x
  2. Step 2: Convert to fraction form
    11,319.85/16,979.02 = 3,422.66/x
  3. Step 3: Cross multiply
    11,319.85x = 16,979.02 × 3,422.66
  4. Step 4: Simplify right side
    11,319.85x = 58,113,319.14
  5. Step 5: Solve for x
    x = 58,113,319.14/11,319.85
  6. Step 6: Final answer
    x = 5,133.75

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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.