Home / 39,782.87-54,901.77-21,879.26

Finding the Fourth Proportional to 39,782.87, 54,901.77 and 21,879.26

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Solution

The fourth proportional to 39,782.87, 54,901.77 and 21,879.26 is: 30,194.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,782.87 : 54,901.77 = 21,879.26 : x
  2. Step 2: Convert to fraction form
    39,782.87/54,901.77 = 21,879.26/x
  3. Step 3: Cross multiply
    39,782.87x = 54,901.77 × 21,879.26
  4. Step 4: Simplify right side
    39,782.87x = 1,201,210,100.29
  5. Step 5: Solve for x
    x = 1,201,210,100.29/39,782.87
  6. Step 6: Final answer
    x = 30,194.15

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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.