Home / 13,268.88-18,322.20-9,089.28

Finding the Fourth Proportional to 13,268.88, 18,322.20 and 9,089.28

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Solution

The fourth proportional to 13,268.88, 18,322.20 and 9,089.28 is: 12,550.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,268.88 : 18,322.20 = 9,089.28 : x
  2. Step 2: Convert to fraction form
    13,268.88/18,322.20 = 9,089.28/x
  3. Step 3: Cross multiply
    13,268.88x = 18,322.20 × 9,089.28
  4. Step 4: Simplify right side
    13,268.88x = 166,535,606.02
  5. Step 5: Solve for x
    x = 166,535,606.02/13,268.88
  6. Step 6: Final answer
    x = 12,550.84

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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.