Home / 28,945.86-39,947.94-18,192.48

Finding the Fourth Proportional to 28,945.86, 39,947.94 and 18,192.48

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Solution

The fourth proportional to 28,945.86, 39,947.94 and 18,192.48 is: 25,107.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,945.86 : 39,947.94 = 18,192.48 : x
  2. Step 2: Convert to fraction form
    28,945.86/39,947.94 = 18,192.48/x
  3. Step 3: Cross multiply
    28,945.86x = 39,947.94 × 18,192.48
  4. Step 4: Simplify right side
    28,945.86x = 726,752,099.49
  5. Step 5: Solve for x
    x = 726,752,099.49/28,945.86
  6. Step 6: Final answer
    x = 25,107.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.