Home / 12,125.86-18,188.79-3,806.52

Finding the Fourth Proportional to 12,125.86, 18,188.79 and 3,806.52

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Solution

The fourth proportional to 12,125.86, 18,188.79 and 3,806.52 is: 5,709.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.86 : 18,188.79 = 3,806.52 : x
  2. Step 2: Convert to fraction form
    12,125.86/18,188.79 = 3,806.52/x
  3. Step 3: Cross multiply
    12,125.86x = 18,188.79 × 3,806.52
  4. Step 4: Simplify right side
    12,125.86x = 69,235,992.91
  5. Step 5: Solve for x
    x = 69,235,992.91/12,125.86
  6. Step 6: Final answer
    x = 5,709.78

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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.