Home / 13,188.92-18,200.82-8,151.99

Finding the Fourth Proportional to 13,188.92, 18,200.82 and 8,151.99

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Solution

The fourth proportional to 13,188.92, 18,200.82 and 8,151.99 is: 11,249.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.92 : 18,200.82 = 8,151.99 : x
  2. Step 2: Convert to fraction form
    13,188.92/18,200.82 = 8,151.99/x
  3. Step 3: Cross multiply
    13,188.92x = 18,200.82 × 8,151.99
  4. Step 4: Simplify right side
    13,188.92x = 148,372,902.63
  5. Step 5: Solve for x
    x = 148,372,902.63/13,188.92
  6. Step 6: Final answer
    x = 11,249.82

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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.