Home / 18,895.72-28,318.84-7,789.48

Finding the Fourth Proportional to 18,895.72, 28,318.84 and 7,789.48

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Solution

The fourth proportional to 18,895.72, 28,318.84 and 7,789.48 is: 11,674.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,895.72 : 28,318.84 = 7,789.48 : x
  2. Step 2: Convert to fraction form
    18,895.72/28,318.84 = 7,789.48/x
  3. Step 3: Cross multiply
    18,895.72x = 28,318.84 × 7,789.48
  4. Step 4: Simplify right side
    18,895.72x = 220,589,037.80
  5. Step 5: Solve for x
    x = 220,589,037.80/18,895.72
  6. Step 6: Final answer
    x = 11,674.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.