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Finding the Fourth Proportional to 43,841.52, 65,772.12 and 12,679.20

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Solution

The fourth proportional to 43,841.52, 65,772.12 and 12,679.20 is: 19,021.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,841.52 : 65,772.12 = 12,679.20 : x
  2. Step 2: Convert to fraction form
    43,841.52/65,772.12 = 12,679.20/x
  3. Step 3: Cross multiply
    43,841.52x = 65,772.12 × 12,679.20
  4. Step 4: Simplify right side
    43,841.52x = 833,937,863.90
  5. Step 5: Solve for x
    x = 833,937,863.90/43,841.52
  6. Step 6: Final answer
    x = 19,021.65

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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.