Home / 39,861.05-55,008.29-21,956.09

Finding the Fourth Proportional to 39,861.05, 55,008.29 and 21,956.09

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Solution

The fourth proportional to 39,861.05, 55,008.29 and 21,956.09 is: 30,299.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,861.05 : 55,008.29 = 21,956.09 : x
  2. Step 2: Convert to fraction form
    39,861.05/55,008.29 = 21,956.09/x
  3. Step 3: Cross multiply
    39,861.05x = 55,008.29 × 21,956.09
  4. Step 4: Simplify right side
    39,861.05x = 1,207,766,745.83
  5. Step 5: Solve for x
    x = 1,207,766,745.83/39,861.05
  6. Step 6: Final answer
    x = 30,299.43

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1.5x scale

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.