Home / 18,845.39-28,234.80-11,434.79

Finding the Fourth Proportional to 18,845.39, 28,234.80 and 11,434.79

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Solution

The fourth proportional to 18,845.39, 28,234.80 and 11,434.79 is: 17,131.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,845.39 : 28,234.80 = 11,434.79 : x
  2. Step 2: Convert to fraction form
    18,845.39/28,234.80 = 11,434.79/x
  3. Step 3: Cross multiply
    18,845.39x = 28,234.80 × 11,434.79
  4. Step 4: Simplify right side
    18,845.39x = 322,859,079.28
  5. Step 5: Solve for x
    x = 322,859,079.28/18,845.39
  6. Step 6: Final answer
    x = 17,131.99

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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.