Home / 20,120.60-27,749.68-15,095.97

Finding the Fourth Proportional to 20,120.60, 27,749.68 and 15,095.97

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Solution

The fourth proportional to 20,120.60, 27,749.68 and 15,095.97 is: 20,819.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.60 : 27,749.68 = 15,095.97 : x
  2. Step 2: Convert to fraction form
    20,120.60/27,749.68 = 15,095.97/x
  3. Step 3: Cross multiply
    20,120.60x = 27,749.68 × 15,095.97
  4. Step 4: Simplify right side
    20,120.60x = 418,908,336.79
  5. Step 5: Solve for x
    x = 418,908,336.79/20,120.60
  6. Step 6: Final answer
    x = 20,819.87

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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.