Home / 12,221.50-18,332.26-4,430.32

Finding the Fourth Proportional to 12,221.50, 18,332.26 and 4,430.32

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Solution

The fourth proportional to 12,221.50, 18,332.26 and 4,430.32 is: 6,645.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,221.50 : 18,332.26 = 4,430.32 : x
  2. Step 2: Convert to fraction form
    12,221.50/18,332.26 = 4,430.32/x
  3. Step 3: Cross multiply
    12,221.50x = 18,332.26 × 4,430.32
  4. Step 4: Simplify right side
    12,221.50x = 81,217,778.12
  5. Step 5: Solve for x
    x = 81,217,778.12/12,221.50
  6. Step 6: Final answer
    x = 6,645.48

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Half scale
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Double scale
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Similar ratio
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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.