Home / 12,409.88-18,618.06-4,091.16

Finding the Fourth Proportional to 12,409.88, 18,618.06 and 4,091.16

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Solution

The fourth proportional to 12,409.88, 18,618.06 and 4,091.16 is: 6,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,409.88 : 18,618.06 = 4,091.16 : x
  2. Step 2: Convert to fraction form
    12,409.88/18,618.06 = 4,091.16/x
  3. Step 3: Cross multiply
    12,409.88x = 18,618.06 × 4,091.16
  4. Step 4: Simplify right side
    12,409.88x = 76,169,462.35
  5. Step 5: Solve for x
    x = 76,169,462.35/12,409.88
  6. Step 6: Final answer
    x = 6,137.81

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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.