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Finding the Fourth Proportional to 39,940.50, 59,910.76 and 12,238.50

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Solution

The fourth proportional to 39,940.50, 59,910.76 and 12,238.50 is: 18,357.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,940.50 : 59,910.76 = 12,238.50 : x
  2. Step 2: Convert to fraction form
    39,940.50/59,910.76 = 12,238.50/x
  3. Step 3: Cross multiply
    39,940.50x = 59,910.76 × 12,238.50
  4. Step 4: Simplify right side
    39,940.50x = 733,217,836.26
  5. Step 5: Solve for x
    x = 733,217,836.26/39,940.50
  6. Step 6: Final answer
    x = 18,357.75

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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.