Home / 20,568.92-28,384.98-11,137.48

Finding the Fourth Proportional to 20,568.92, 28,384.98 and 11,137.48

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Solution

The fourth proportional to 20,568.92, 28,384.98 and 11,137.48 is: 15,369.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568.92 : 28,384.98 = 11,137.48 : x
  2. Step 2: Convert to fraction form
    20,568.92/28,384.98 = 11,137.48/x
  3. Step 3: Cross multiply
    20,568.92x = 28,384.98 × 11,137.48
  4. Step 4: Simplify right side
    20,568.92x = 316,137,147.05
  5. Step 5: Solve for x
    x = 316,137,147.05/20,568.92
  6. Step 6: Final answer
    x = 15,369.65

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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.