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Finding the Fourth Proportional to 29,279.68, 43,917.12 and 8,220.04

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Solution

The fourth proportional to 29,279.68, 43,917.12 and 8,220.04 is: 12,329.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,279.68 : 43,917.12 = 8,220.04 : x
  2. Step 2: Convert to fraction form
    29,279.68/43,917.12 = 8,220.04/x
  3. Step 3: Cross multiply
    29,279.68x = 43,917.12 × 8,220.04
  4. Step 4: Simplify right side
    29,279.68x = 361,000,483.08
  5. Step 5: Solve for x
    x = 361,000,483.08/29,279.68
  6. Step 6: Final answer
    x = 12,329.39

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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.