Home / 13,091.16-18,067.68-8,621.64

Finding the Fourth Proportional to 13,091.16, 18,067.68 and 8,621.64

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Solution

The fourth proportional to 13,091.16, 18,067.68 and 8,621.64 is: 11,899.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.16 : 18,067.68 = 8,621.64 : x
  2. Step 2: Convert to fraction form
    13,091.16/18,067.68 = 8,621.64/x
  3. Step 3: Cross multiply
    13,091.16x = 18,067.68 × 8,621.64
  4. Step 4: Simplify right side
    13,091.16x = 155,773,032.60
  5. Step 5: Solve for x
    x = 155,773,032.60/13,091.16
  6. Step 6: Final answer
    x = 11,899.10

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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.