Home / 12,220.88-18,331.38-3,901.77

Finding the Fourth Proportional to 12,220.88, 18,331.38 and 3,901.77

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Solution

The fourth proportional to 12,220.88, 18,331.38 and 3,901.77 is: 5,852.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.88 : 18,331.38 = 3,901.77 : x
  2. Step 2: Convert to fraction form
    12,220.88/18,331.38 = 3,901.77/x
  3. Step 3: Cross multiply
    12,220.88x = 18,331.38 × 3,901.77
  4. Step 4: Simplify right side
    12,220.88x = 71,524,828.54
  5. Step 5: Solve for x
    x = 71,524,828.54/12,220.88
  6. Step 6: Final answer
    x = 5,852.68

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Double scale
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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.