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Finding the Fourth Proportional to 22,638.80, 33,891.24 and 16,821.20

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Solution

The fourth proportional to 22,638.80, 33,891.24 and 16,821.20 is: 25,182.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,638.80 : 33,891.24 = 16,821.20 : x
  2. Step 2: Convert to fraction form
    22,638.80/33,891.24 = 16,821.20/x
  3. Step 3: Cross multiply
    22,638.80x = 33,891.24 × 16,821.20
  4. Step 4: Simplify right side
    22,638.80x = 570,091,326.29
  5. Step 5: Solve for x
    x = 570,091,326.29/22,638.80
  6. Step 6: Final answer
    x = 25,182.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.