Home / 13,221.27-19,819.45-4,450.05

Finding the Fourth Proportional to 13,221.27, 19,819.45 and 4,450.05

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Solution

The fourth proportional to 13,221.27, 19,819.45 and 4,450.05 is: 6,670.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.27 : 19,819.45 = 4,450.05 : x
  2. Step 2: Convert to fraction form
    13,221.27/19,819.45 = 4,450.05/x
  3. Step 3: Cross multiply
    13,221.27x = 19,819.45 × 4,450.05
  4. Step 4: Simplify right side
    13,221.27x = 88,197,543.47
  5. Step 5: Solve for x
    x = 88,197,543.47/13,221.27
  6. Step 6: Final answer
    x = 6,670.88

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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.