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Finding the Fourth Proportional to 22,013.80, 32,999.10 and 11,489.20

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Solution

The fourth proportional to 22,013.80, 32,999.10 and 11,489.20 is: 17,222.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,013.80 : 32,999.10 = 11,489.20 : x
  2. Step 2: Convert to fraction form
    22,013.80/32,999.10 = 11,489.20/x
  3. Step 3: Cross multiply
    22,013.80x = 32,999.10 × 11,489.20
  4. Step 4: Simplify right side
    22,013.80x = 379,133,259.72
  5. Step 5: Solve for x
    x = 379,133,259.72/22,013.80
  6. Step 6: Final answer
    x = 17,222.53

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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.