Home / 39,221.20-58,819.16-12,919.68

Finding the Fourth Proportional to 39,221.20, 58,819.16 and 12,919.68

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Solution

The fourth proportional to 39,221.20, 58,819.16 and 12,919.68 is: 19,375.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,221.20 : 58,819.16 = 12,919.68 : x
  2. Step 2: Convert to fraction form
    39,221.20/58,819.16 = 12,919.68/x
  3. Step 3: Cross multiply
    39,221.20x = 58,819.16 × 12,919.68
  4. Step 4: Simplify right side
    39,221.20x = 759,924,725.07
  5. Step 5: Solve for x
    x = 759,924,725.07/39,221.20
  6. Step 6: Final answer
    x = 19,375.36

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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.