Home / 13,618.14-20,383.38-9,211.32

Finding the Fourth Proportional to 13,618.14, 20,383.38 and 9,211.32

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Solution

The fourth proportional to 13,618.14, 20,383.38 and 9,211.32 is: 13,787.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.14 : 20,383.38 = 9,211.32 : x
  2. Step 2: Convert to fraction form
    13,618.14/20,383.38 = 9,211.32/x
  3. Step 3: Cross multiply
    13,618.14x = 20,383.38 × 9,211.32
  4. Step 4: Simplify right side
    13,618.14x = 187,757,835.86
  5. Step 5: Solve for x
    x = 187,757,835.86/13,618.14
  6. Step 6: Final answer
    x = 13,787.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.