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Finding the Fourth Proportional to 22,011.80, 32,996.10 and 11,487.20

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Solution

The fourth proportional to 22,011.80, 32,996.10 and 11,487.20 is: 17,219.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,011.80 : 32,996.10 = 11,487.20 : x
  2. Step 2: Convert to fraction form
    22,011.80/32,996.10 = 11,487.20/x
  3. Step 3: Cross multiply
    22,011.80x = 32,996.10 × 11,487.20
  4. Step 4: Simplify right side
    22,011.80x = 379,032,799.92
  5. Step 5: Solve for x
    x = 379,032,799.92/22,011.80
  6. Step 6: Final answer
    x = 17,219.53

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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.