Home / 13,431.08-18,542.66-8,969.60

Finding the Fourth Proportional to 13,431.08, 18,542.66 and 8,969.60

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Solution

The fourth proportional to 13,431.08, 18,542.66 and 8,969.60 is: 12,383.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.08 : 18,542.66 = 8,969.60 : x
  2. Step 2: Convert to fraction form
    13,431.08/18,542.66 = 8,969.60/x
  3. Step 3: Cross multiply
    13,431.08x = 18,542.66 × 8,969.60
  4. Step 4: Simplify right side
    13,431.08x = 166,320,244.64
  5. Step 5: Solve for x
    x = 166,320,244.64/13,431.08
  6. Step 6: Final answer
    x = 12,383.23

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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.