Home / 18,947.73-28,405.40-7,269.33

Finding the Fourth Proportional to 18,947.73, 28,405.40 and 7,269.33

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Solution

The fourth proportional to 18,947.73, 28,405.40 and 7,269.33 is: 10,897.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.73 : 28,405.40 = 7,269.33 : x
  2. Step 2: Convert to fraction form
    18,947.73/28,405.40 = 7,269.33/x
  3. Step 3: Cross multiply
    18,947.73x = 28,405.40 × 7,269.33
  4. Step 4: Simplify right side
    18,947.73x = 206,488,190.04
  5. Step 5: Solve for x
    x = 206,488,190.04/18,947.73
  6. Step 6: Final answer
    x = 10,897.78

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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.