Home / 18,853.42-28,280.30-7,755.76

Finding the Fourth Proportional to 18,853.42, 28,280.30 and 7,755.76

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Solution

The fourth proportional to 18,853.42, 28,280.30 and 7,755.76 is: 11,633.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,853.42 : 28,280.30 = 7,755.76 : x
  2. Step 2: Convert to fraction form
    18,853.42/28,280.30 = 7,755.76/x
  3. Step 3: Cross multiply
    18,853.42x = 28,280.30 × 7,755.76
  4. Step 4: Simplify right side
    18,853.42x = 219,335,310.40
  5. Step 5: Solve for x
    x = 219,335,310.40/18,853.42
  6. Step 6: Final answer
    x = 11,633.71

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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.