Home / 18,910.38-28,368.66-6,431.52

Finding the Fourth Proportional to 18,910.38, 28,368.66 and 6,431.52

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Solution

The fourth proportional to 18,910.38, 28,368.66 and 6,431.52 is: 9,648.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.38 : 28,368.66 = 6,431.52 : x
  2. Step 2: Convert to fraction form
    18,910.38/28,368.66 = 6,431.52/x
  3. Step 3: Cross multiply
    18,910.38x = 28,368.66 × 6,431.52
  4. Step 4: Simplify right side
    18,910.38x = 182,453,604.16
  5. Step 5: Solve for x
    x = 182,453,604.16/18,910.38
  6. Step 6: Final answer
    x = 9,648.33

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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.