Home / 39,726.09-54,821.07-21,821.04

Finding the Fourth Proportional to 39,726.09, 54,821.07 and 21,821.04

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Solution

The fourth proportional to 39,726.09, 54,821.07 and 21,821.04 is: 30,112.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,726.09 : 54,821.07 = 21,821.04 : x
  2. Step 2: Convert to fraction form
    39,726.09/54,821.07 = 21,821.04/x
  3. Step 3: Cross multiply
    39,726.09x = 54,821.07 × 21,821.04
  4. Step 4: Simplify right side
    39,726.09x = 1,196,252,761.31
  5. Step 5: Solve for x
    x = 1,196,252,761.31/39,726.09
  6. Step 6: Final answer
    x = 30,112.52

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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.