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Finding the Fourth Proportional to 18,388.12, 25,362 and 11,667.96

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Solution

The fourth proportional to 18,388.12, 25,362 and 11,667.96 is: 16,093.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.12 : 25,362 = 11,667.96 : x
  2. Step 2: Convert to fraction form
    18,388.12/25,362 = 11,667.96/x
  3. Step 3: Cross multiply
    18,388.12x = 25,362 × 11,667.96
  4. Step 4: Simplify right side
    18,388.12x = 295,922,801.52
  5. Step 5: Solve for x
    x = 295,922,801.52/18,388.12
  6. Step 6: Final answer
    x = 16,093.15

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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.