Home / 39,861.06-55,008.25-21,956.06

Finding the Fourth Proportional to 39,861.06, 55,008.25 and 21,956.06

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Solution

The fourth proportional to 39,861.06, 55,008.25 and 21,956.06 is: 30,299.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,861.06 : 55,008.25 = 21,956.06 : x
  2. Step 2: Convert to fraction form
    39,861.06/55,008.25 = 21,956.06/x
  3. Step 3: Cross multiply
    39,861.06x = 55,008.25 × 21,956.06
  4. Step 4: Simplify right side
    39,861.06x = 1,207,764,520.13
  5. Step 5: Solve for x
    x = 1,207,764,520.13/39,861.06
  6. Step 6: Final answer
    x = 30,299.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.