Home / 19,286.91-28,930.05-6,139.11

Finding the Fourth Proportional to 19,286.91, 28,930.05 and 6,139.11

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Solution

The fourth proportional to 19,286.91, 28,930.05 and 6,139.11 is: 9,208.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.91 : 28,930.05 = 6,139.11 : x
  2. Step 2: Convert to fraction form
    19,286.91/28,930.05 = 6,139.11/x
  3. Step 3: Cross multiply
    19,286.91x = 28,930.05 × 6,139.11
  4. Step 4: Simplify right side
    19,286.91x = 177,604,759.26
  5. Step 5: Solve for x
    x = 177,604,759.26/19,286.91
  6. Step 6: Final answer
    x = 9,208.56

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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.