Home / 38,721.04-53,435.20-21,954

Finding the Fourth Proportional to 38,721.04, 53,435.20 and 21,954

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Solution

The fourth proportional to 38,721.04, 53,435.20 and 21,954 is: 30,296.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,721.04 : 53,435.20 = 21,954 : x
  2. Step 2: Convert to fraction form
    38,721.04/53,435.20 = 21,954/x
  3. Step 3: Cross multiply
    38,721.04x = 53,435.20 × 21,954
  4. Step 4: Simplify right side
    38,721.04x = 1,173,116,380.80
  5. Step 5: Solve for x
    x = 1,173,116,380.80/38,721.04
  6. Step 6: Final answer
    x = 30,296.61

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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.