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Finding the Fourth Proportional to 8,943.67, 13,372.80 and 8,159.43

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Solution

The fourth proportional to 8,943.67, 13,372.80 and 8,159.43 is: 12,200.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,943.67 : 13,372.80 = 8,159.43 : x
  2. Step 2: Convert to fraction form
    8,943.67/13,372.80 = 8,159.43/x
  3. Step 3: Cross multiply
    8,943.67x = 13,372.80 × 8,159.43
  4. Step 4: Simplify right side
    8,943.67x = 109,114,445.05
  5. Step 5: Solve for x
    x = 109,114,445.05/8,943.67
  6. Step 6: Final answer
    x = 12,200.19

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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.