Home / 21,727.44-29,912.76-20,619.36

Finding the Fourth Proportional to 21,727.44, 29,912.76 and 20,619.36

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Solution

The fourth proportional to 21,727.44, 29,912.76 and 20,619.36 is: 28,387.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,727.44 : 29,912.76 = 20,619.36 : x
  2. Step 2: Convert to fraction form
    21,727.44/29,912.76 = 20,619.36/x
  3. Step 3: Cross multiply
    21,727.44x = 29,912.76 × 20,619.36
  4. Step 4: Simplify right side
    21,727.44x = 616,781,967.03
  5. Step 5: Solve for x
    x = 616,781,967.03/21,727.44
  6. Step 6: Final answer
    x = 28,387.24

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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.