Home / 12,118.55-18,177.86-3,685.13

Finding the Fourth Proportional to 12,118.55, 18,177.86 and 3,685.13

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Solution

The fourth proportional to 12,118.55, 18,177.86 and 3,685.13 is: 5,527.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.55 : 18,177.86 = 3,685.13 : x
  2. Step 2: Convert to fraction form
    12,118.55/18,177.86 = 3,685.13/x
  3. Step 3: Cross multiply
    12,118.55x = 18,177.86 × 3,685.13
  4. Step 4: Simplify right side
    12,118.55x = 66,987,777.22
  5. Step 5: Solve for x
    x = 66,987,777.22/12,118.55
  6. Step 6: Final answer
    x = 5,527.71

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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.