Home / 12,221.60-18,331.32-3,456.32

Finding the Fourth Proportional to 12,221.60, 18,331.32 and 3,456.32

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Solution

The fourth proportional to 12,221.60, 18,331.32 and 3,456.32 is: 5,184.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.60 : 18,331.32 = 3,456.32 : x
  2. Step 2: Convert to fraction form
    12,221.60/18,331.32 = 3,456.32/x
  3. Step 3: Cross multiply
    12,221.60x = 18,331.32 × 3,456.32
  4. Step 4: Simplify right side
    12,221.60x = 63,358,907.94
  5. Step 5: Solve for x
    x = 63,358,907.94/12,221.60
  6. Step 6: Final answer
    x = 5,184.17

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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.