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Finding the Fourth Proportional to 39,940.30, 59,918.96 and 11,860.44

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Solution

The fourth proportional to 39,940.30, 59,918.96 and 11,860.44 is: 17,793.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,940.30 : 59,918.96 = 11,860.44 : x
  2. Step 2: Convert to fraction form
    39,940.30/59,918.96 = 11,860.44/x
  3. Step 3: Cross multiply
    39,940.30x = 59,918.96 × 11,860.44
  4. Step 4: Simplify right side
    39,940.30x = 710,665,229.94
  5. Step 5: Solve for x
    x = 710,665,229.94/39,940.30
  6. Step 6: Final answer
    x = 17,793.19

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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.