Home / 20,667.62-28,521.26-11,236.19

Finding the Fourth Proportional to 20,667.62, 28,521.26 and 11,236.19

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Solution

The fourth proportional to 20,667.62, 28,521.26 and 11,236.19 is: 15,505.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.62 : 28,521.26 = 11,236.19 : x
  2. Step 2: Convert to fraction form
    20,667.62/28,521.26 = 11,236.19/x
  3. Step 3: Cross multiply
    20,667.62x = 28,521.26 × 11,236.19
  4. Step 4: Simplify right side
    20,667.62x = 320,470,202.95
  5. Step 5: Solve for x
    x = 320,470,202.95/20,667.62
  6. Step 6: Final answer
    x = 15,505.91

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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.