Home / 13,268.09-18,306.80-8,969.20

Finding the Fourth Proportional to 13,268.09, 18,306.80 and 8,969.20

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Solution

The fourth proportional to 13,268.09, 18,306.80 and 8,969.20 is: 12,375.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,268.09 : 18,306.80 = 8,969.20 : x
  2. Step 2: Convert to fraction form
    13,268.09/18,306.80 = 8,969.20/x
  3. Step 3: Cross multiply
    13,268.09x = 18,306.80 × 8,969.20
  4. Step 4: Simplify right side
    13,268.09x = 164,197,350.56
  5. Step 5: Solve for x
    x = 164,197,350.56/13,268.09
  6. Step 6: Final answer
    x = 12,375.36

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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.