Home / 11,986.77-17,981.07-6,147.48

Finding the Fourth Proportional to 11,986.77, 17,981.07 and 6,147.48

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Solution

The fourth proportional to 11,986.77, 17,981.07 and 6,147.48 is: 9,221.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.77 : 17,981.07 = 6,147.48 : x
  2. Step 2: Convert to fraction form
    11,986.77/17,981.07 = 6,147.48/x
  3. Step 3: Cross multiply
    11,986.77x = 17,981.07 × 6,147.48
  4. Step 4: Simplify right side
    11,986.77x = 110,538,268.20
  5. Step 5: Solve for x
    x = 110,538,268.20/11,986.77
  6. Step 6: Final answer
    x = 9,221.69

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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.