Home / 13,245.39-18,271.04-8,268.75

Finding the Fourth Proportional to 13,245.39, 18,271.04 and 8,268.75

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Solution

The fourth proportional to 13,245.39, 18,271.04 and 8,268.75 is: 11,406.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.39 : 18,271.04 = 8,268.75 : x
  2. Step 2: Convert to fraction form
    13,245.39/18,271.04 = 8,268.75/x
  3. Step 3: Cross multiply
    13,245.39x = 18,271.04 × 8,268.75
  4. Step 4: Simplify right side
    13,245.39x = 151,078,620.66
  5. Step 5: Solve for x
    x = 151,078,620.66/13,245.39
  6. Step 6: Final answer
    x = 11,406.13

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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.