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Finding the Fourth Proportional to 22,445.76, 30,997.44 and 18,480

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Solution

The fourth proportional to 22,445.76, 30,997.44 and 18,480 is: 25,520.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,445.76 : 30,997.44 = 18,480 : x
  2. Step 2: Convert to fraction form
    22,445.76/30,997.44 = 18,480/x
  3. Step 3: Cross multiply
    22,445.76x = 30,997.44 × 18,480
  4. Step 4: Simplify right side
    22,445.76x = 572,832,691.20
  5. Step 5: Solve for x
    x = 572,832,691.20/22,445.76
  6. Step 6: Final answer
    x = 25,520.75

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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.