Home / 20,749.05-31,092-15,206.07

Finding the Fourth Proportional to 20,749.05, 31,092 and 15,206.07

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Solution

The fourth proportional to 20,749.05, 31,092 and 15,206.07 is: 22,785.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.05 : 31,092 = 15,206.07 : x
  2. Step 2: Convert to fraction form
    20,749.05/31,092 = 15,206.07/x
  3. Step 3: Cross multiply
    20,749.05x = 31,092 × 15,206.07
  4. Step 4: Simplify right side
    20,749.05x = 472,787,128.44
  5. Step 5: Solve for x
    x = 472,787,128.44/20,749.05
  6. Step 6: Final answer
    x = 22,785.97

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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.