Home / 20,590.36-28,414.71-11,158.96

Finding the Fourth Proportional to 20,590.36, 28,414.71 and 11,158.96

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Solution

The fourth proportional to 20,590.36, 28,414.71 and 11,158.96 is: 15,399.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,590.36 : 28,414.71 = 11,158.96 : x
  2. Step 2: Convert to fraction form
    20,590.36/28,414.71 = 11,158.96/x
  3. Step 3: Cross multiply
    20,590.36x = 28,414.71 × 11,158.96
  4. Step 4: Simplify right side
    20,590.36x = 317,078,612.30
  5. Step 5: Solve for x
    x = 317,078,612.30/20,590.36
  6. Step 6: Final answer
    x = 15,399.37

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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.