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Finding the Fourth Proportional to 40,213.92, 60,324.99 and 13,918.59

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Solution

The fourth proportional to 40,213.92, 60,324.99 and 13,918.59 is: 20,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,213.92 : 60,324.99 = 13,918.59 : x
  2. Step 2: Convert to fraction form
    40,213.92/60,324.99 = 13,918.59/x
  3. Step 3: Cross multiply
    40,213.92x = 60,324.99 × 13,918.59
  4. Step 4: Simplify right side
    40,213.92x = 839,638,732.97
  5. Step 5: Solve for x
    x = 839,638,732.97/40,213.92
  6. Step 6: Final answer
    x = 20,879.30

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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.