Home / 20,803.92-28,709.41-11,372.48

Finding the Fourth Proportional to 20,803.92, 28,709.41 and 11,372.48

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Solution

The fourth proportional to 20,803.92, 28,709.41 and 11,372.48 is: 15,694.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.92 : 28,709.41 = 11,372.48 : x
  2. Step 2: Convert to fraction form
    20,803.92/28,709.41 = 11,372.48/x
  3. Step 3: Cross multiply
    20,803.92x = 28,709.41 × 11,372.48
  4. Step 4: Simplify right side
    20,803.92x = 326,497,341.52
  5. Step 5: Solve for x
    x = 326,497,341.52/20,803.92
  6. Step 6: Final answer
    x = 15,694.03

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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.