Home / 18,188.75-25,086.25-11,817.39

Finding the Fourth Proportional to 18,188.75, 25,086.25 and 11,817.39

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Solution

The fourth proportional to 18,188.75, 25,086.25 and 11,817.39 is: 16,298.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,188.75 : 25,086.25 = 11,817.39 : x
  2. Step 2: Convert to fraction form
    18,188.75/25,086.25 = 11,817.39/x
  3. Step 3: Cross multiply
    18,188.75x = 25,086.25 × 11,817.39
  4. Step 4: Simplify right side
    18,188.75x = 296,453,970.34
  5. Step 5: Solve for x
    x = 296,453,970.34/18,188.75
  6. Step 6: Final answer
    x = 16,298.75

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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.