Home / 13,074.08-18,046.86-7,768.87

Finding the Fourth Proportional to 13,074.08, 18,046.86 and 7,768.87

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Solution

The fourth proportional to 13,074.08, 18,046.86 and 7,768.87 is: 10,723.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,074.08 : 18,046.86 = 7,768.87 : x
  2. Step 2: Convert to fraction form
    13,074.08/18,046.86 = 7,768.87/x
  3. Step 3: Cross multiply
    13,074.08x = 18,046.86 × 7,768.87
  4. Step 4: Simplify right side
    13,074.08x = 140,203,619.01
  5. Step 5: Solve for x
    x = 140,203,619.01/13,074.08
  6. Step 6: Final answer
    x = 10,723.78

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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.