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Finding the Fourth Proportional to 39,379.92, 59,059.80 and 11,671.44

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Solution

The fourth proportional to 39,379.92, 59,059.80 and 11,671.44 is: 17,504.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,379.92 : 59,059.80 = 11,671.44 : x
  2. Step 2: Convert to fraction form
    39,379.92/59,059.80 = 11,671.44/x
  3. Step 3: Cross multiply
    39,379.92x = 59,059.80 × 11,671.44
  4. Step 4: Simplify right side
    39,379.92x = 689,312,912.11
  5. Step 5: Solve for x
    x = 689,312,912.11/39,379.92
  6. Step 6: Final answer
    x = 17,504.17

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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.