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Finding the Fourth Proportional to 22,008.80, 33,012.90 and 7,218.20

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Solution

The fourth proportional to 22,008.80, 33,012.90 and 7,218.20 is: 10,827.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,008.80 : 33,012.90 = 7,218.20 : x
  2. Step 2: Convert to fraction form
    22,008.80/33,012.90 = 7,218.20/x
  3. Step 3: Cross multiply
    22,008.80x = 33,012.90 × 7,218.20
  4. Step 4: Simplify right side
    22,008.80x = 238,293,714.78
  5. Step 5: Solve for x
    x = 238,293,714.78/22,008.80
  6. Step 6: Final answer
    x = 10,827.20

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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.