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Finding the Fourth Proportional to 21,956.85, 32,941.43 and 8,818.44

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Solution

The fourth proportional to 21,956.85, 32,941.43 and 8,818.44 is: 13,230.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.85 : 32,941.43 = 8,818.44 : x
  2. Step 2: Convert to fraction form
    21,956.85/32,941.43 = 8,818.44/x
  3. Step 3: Cross multiply
    21,956.85x = 32,941.43 × 8,818.44
  4. Step 4: Simplify right side
    21,956.85x = 290,492,023.97
  5. Step 5: Solve for x
    x = 290,492,023.97/21,956.85
  6. Step 6: Final answer
    x = 13,230.13

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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.