Home / 12,091.21-16,686.61-6,786.02

Finding the Fourth Proportional to 12,091.21, 16,686.61 and 6,786.02

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Solution

The fourth proportional to 12,091.21, 16,686.61 and 6,786.02 is: 9,365.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,091.21 : 16,686.61 = 6,786.02 : x
  2. Step 2: Convert to fraction form
    12,091.21/16,686.61 = 6,786.02/x
  3. Step 3: Cross multiply
    12,091.21x = 16,686.61 × 6,786.02
  4. Step 4: Simplify right side
    12,091.21x = 113,235,693.94
  5. Step 5: Solve for x
    x = 113,235,693.94/12,091.21
  6. Step 6: Final answer
    x = 9,365.13

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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.