Home / 11,378.20-17,067.30-3,587.80

Finding the Fourth Proportional to 11,378.20, 17,067.30 and 3,587.80

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Solution

The fourth proportional to 11,378.20, 17,067.30 and 3,587.80 is: 5,381.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.20 : 17,067.30 = 3,587.80 : x
  2. Step 2: Convert to fraction form
    11,378.20/17,067.30 = 3,587.80/x
  3. Step 3: Cross multiply
    11,378.20x = 17,067.30 × 3,587.80
  4. Step 4: Simplify right side
    11,378.20x = 61,234,058.94
  5. Step 5: Solve for x
    x = 61,234,058.94/11,378.20
  6. Step 6: Final answer
    x = 5,381.70

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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.