Home / 11,418.50-17,129.35-3,521.64

Finding the Fourth Proportional to 11,418.50, 17,129.35 and 3,521.64

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Solution

The fourth proportional to 11,418.50, 17,129.35 and 3,521.64 is: 5,282.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,418.50 : 17,129.35 = 3,521.64 : x
  2. Step 2: Convert to fraction form
    11,418.50/17,129.35 = 3,521.64/x
  3. Step 3: Cross multiply
    11,418.50x = 17,129.35 × 3,521.64
  4. Step 4: Simplify right side
    11,418.50x = 60,323,404.13
  5. Step 5: Solve for x
    x = 60,323,404.13/11,418.50
  6. Step 6: Final answer
    x = 5,282.95

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1.5x scale

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.