Home / 11,238.22-16,859.15-4,218.78

Finding the Fourth Proportional to 11,238.22, 16,859.15 and 4,218.78

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Solution

The fourth proportional to 11,238.22, 16,859.15 and 4,218.78 is: 6,328.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,238.22 : 16,859.15 = 4,218.78 : x
  2. Step 2: Convert to fraction form
    11,238.22/16,859.15 = 4,218.78/x
  3. Step 3: Cross multiply
    11,238.22x = 16,859.15 × 4,218.78
  4. Step 4: Simplify right side
    11,238.22x = 71,125,044.84
  5. Step 5: Solve for x
    x = 71,125,044.84/11,238.22
  6. Step 6: Final answer
    x = 6,328.85

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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.