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Finding the Fourth Proportional to 43,801.89, 65,704.95 and 12,211.89

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Solution

The fourth proportional to 43,801.89, 65,704.95 and 12,211.89 is: 18,318.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,801.89 : 65,704.95 = 12,211.89 : x
  2. Step 2: Convert to fraction form
    43,801.89/65,704.95 = 12,211.89/x
  3. Step 3: Cross multiply
    43,801.89x = 65,704.95 × 12,211.89
  4. Step 4: Simplify right side
    43,801.89x = 802,381,621.86
  5. Step 5: Solve for x
    x = 802,381,621.86/43,801.89
  6. Step 6: Final answer
    x = 18,318.42

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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.