Home / 21,204.72-29,241-12,819.60

Finding the Fourth Proportional to 21,204.72, 29,241 and 12,819.60

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Solution

The fourth proportional to 21,204.72, 29,241 and 12,819.60 is: 17,678.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,204.72 : 29,241 = 12,819.60 : x
  2. Step 2: Convert to fraction form
    21,204.72/29,241 = 12,819.60/x
  3. Step 3: Cross multiply
    21,204.72x = 29,241 × 12,819.60
  4. Step 4: Simplify right side
    21,204.72x = 374,857,923.60
  5. Step 5: Solve for x
    x = 374,857,923.60/21,204.72
  6. Step 6: Final answer
    x = 17,678.04

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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.