Home / 22,220.35-30,664-12,148.78

Finding the Fourth Proportional to 22,220.35, 30,664 and 12,148.78

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Solution

The fourth proportional to 22,220.35, 30,664 and 12,148.78 is: 16,765.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,220.35 : 30,664 = 12,148.78 : x
  2. Step 2: Convert to fraction form
    22,220.35/30,664 = 12,148.78/x
  3. Step 3: Cross multiply
    22,220.35x = 30,664 × 12,148.78
  4. Step 4: Simplify right side
    22,220.35x = 372,530,189.92
  5. Step 5: Solve for x
    x = 372,530,189.92/22,220.35
  6. Step 6: Final answer
    x = 16,765.27

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.