Home / 20,471.94-28,251.54-11,518.92

Finding the Fourth Proportional to 20,471.94, 28,251.54 and 11,518.92

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Solution

The fourth proportional to 20,471.94, 28,251.54 and 11,518.92 is: 15,896.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,471.94 : 28,251.54 = 11,518.92 : x
  2. Step 2: Convert to fraction form
    20,471.94/28,251.54 = 11,518.92/x
  3. Step 3: Cross multiply
    20,471.94x = 28,251.54 × 11,518.92
  4. Step 4: Simplify right side
    20,471.94x = 325,427,229.14
  5. Step 5: Solve for x
    x = 325,427,229.14/20,471.94
  6. Step 6: Final answer
    x = 15,896.26

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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.