Home / 20,601.51-28,429.83-11,169.87

Finding the Fourth Proportional to 20,601.51, 28,429.83 and 11,169.87

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Solution

The fourth proportional to 20,601.51, 28,429.83 and 11,169.87 is: 15,414.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.51 : 28,429.83 = 11,169.87 : x
  2. Step 2: Convert to fraction form
    20,601.51/28,429.83 = 11,169.87/x
  3. Step 3: Cross multiply
    20,601.51x = 28,429.83 × 11,169.87
  4. Step 4: Simplify right side
    20,601.51x = 317,557,505.22
  5. Step 5: Solve for x
    x = 317,557,505.22/20,601.51
  6. Step 6: Final answer
    x = 15,414.28

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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.