Home / 20,845.92-28,767.36-11,414.40

Finding the Fourth Proportional to 20,845.92, 28,767.36 and 11,414.40

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Solution

The fourth proportional to 20,845.92, 28,767.36 and 11,414.40 is: 15,751.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.92 : 28,767.36 = 11,414.40 : x
  2. Step 2: Convert to fraction form
    20,845.92/28,767.36 = 11,414.40/x
  3. Step 3: Cross multiply
    20,845.92x = 28,767.36 × 11,414.40
  4. Step 4: Simplify right side
    20,845.92x = 328,362,153.98
  5. Step 5: Solve for x
    x = 328,362,153.98/20,845.92
  6. Step 6: Final answer
    x = 15,751.87

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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.