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Finding the Fourth Proportional to 12,091.14, 16,686 and 6,785.64

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Solution

The fourth proportional to 12,091.14, 16,686 and 6,785.64 is: 9,364.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,091.14 : 16,686 = 6,785.64 : x
  2. Step 2: Convert to fraction form
    12,091.14/16,686 = 6,785.64/x
  3. Step 3: Cross multiply
    12,091.14x = 16,686 × 6,785.64
  4. Step 4: Simplify right side
    12,091.14x = 113,225,189.04
  5. Step 5: Solve for x
    x = 113,225,189.04/12,091.14
  6. Step 6: Final answer
    x = 9,364.31

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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.