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Finding the Fourth Proportional to 29,969.85, 44,974.85 and 12,439.70

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Solution

The fourth proportional to 29,969.85, 44,974.85 and 12,439.70 is: 18,667.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,969.85 : 44,974.85 = 12,439.70 : x
  2. Step 2: Convert to fraction form
    29,969.85/44,974.85 = 12,439.70/x
  3. Step 3: Cross multiply
    29,969.85x = 44,974.85 × 12,439.70
  4. Step 4: Simplify right side
    29,969.85x = 559,473,641.55
  5. Step 5: Solve for x
    x = 559,473,641.55/29,969.85
  6. Step 6: Final answer
    x = 18,667.88

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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.