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Finding the Fourth Proportional to 22,138.18, 30,524.09 and 18,090.05

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Solution

The fourth proportional to 22,138.18, 30,524.09 and 18,090.05 is: 24,942.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,138.18 : 30,524.09 = 18,090.05 : x
  2. Step 2: Convert to fraction form
    22,138.18/30,524.09 = 18,090.05/x
  3. Step 3: Cross multiply
    22,138.18x = 30,524.09 × 18,090.05
  4. Step 4: Simplify right side
    22,138.18x = 552,182,071.23
  5. Step 5: Solve for x
    x = 552,182,071.23/22,138.18
  6. Step 6: Final answer
    x = 24,942.53

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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.