Home / 20,935.64-28,891.38-11,504.42

Finding the Fourth Proportional to 20,935.64, 28,891.38 and 11,504.42

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Solution

The fourth proportional to 20,935.64, 28,891.38 and 11,504.42 is: 15,876.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.64 : 28,891.38 = 11,504.42 : x
  2. Step 2: Convert to fraction form
    20,935.64/28,891.38 = 11,504.42/x
  3. Step 3: Cross multiply
    20,935.64x = 28,891.38 × 11,504.42
  4. Step 4: Simplify right side
    20,935.64x = 332,378,569.90
  5. Step 5: Solve for x
    x = 332,378,569.90/20,935.64
  6. Step 6: Final answer
    x = 15,876.21

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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.