Home / 12,221.64-18,330.30-3,456.36

Finding the Fourth Proportional to 12,221.64, 18,330.30 and 3,456.36

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Solution

The fourth proportional to 12,221.64, 18,330.30 and 3,456.36 is: 5,183.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.64 : 18,330.30 = 3,456.36 : x
  2. Step 2: Convert to fraction form
    12,221.64/18,330.30 = 3,456.36/x
  3. Step 3: Cross multiply
    12,221.64x = 18,330.30 × 3,456.36
  4. Step 4: Simplify right side
    12,221.64x = 63,356,115.71
  5. Step 5: Solve for x
    x = 63,356,115.71/12,221.64
  6. Step 6: Final answer
    x = 5,183.93

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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.