Home / 18,979.36-28,470.42-7,292.56

Finding the Fourth Proportional to 18,979.36, 28,470.42 and 7,292.56

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Solution

The fourth proportional to 18,979.36, 28,470.42 and 7,292.56 is: 10,939.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.36 : 28,470.42 = 7,292.56 : x
  2. Step 2: Convert to fraction form
    18,979.36/28,470.42 = 7,292.56/x
  3. Step 3: Cross multiply
    18,979.36x = 28,470.42 × 7,292.56
  4. Step 4: Simplify right side
    18,979.36x = 207,622,246.08
  5. Step 5: Solve for x
    x = 207,622,246.08/18,979.36
  6. Step 6: Final answer
    x = 10,939.37

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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.