Home / 21,612.35-32,416.70-12,222.83

Finding the Fourth Proportional to 21,612.35, 32,416.70 and 12,222.83

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Solution

The fourth proportional to 21,612.35, 32,416.70 and 12,222.83 is: 18,333.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.35 : 32,416.70 = 12,222.83 : x
  2. Step 2: Convert to fraction form
    21,612.35/32,416.70 = 12,222.83/x
  3. Step 3: Cross multiply
    21,612.35x = 32,416.70 × 12,222.83
  4. Step 4: Simplify right side
    21,612.35x = 396,223,824.97
  5. Step 5: Solve for x
    x = 396,223,824.97/21,612.35
  6. Step 6: Final answer
    x = 18,333.21

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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.