Home / 39,861.57-55,008.09-21,956.16

Finding the Fourth Proportional to 39,861.57, 55,008.09 and 21,956.16

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Solution

The fourth proportional to 39,861.57, 55,008.09 and 21,956.16 is: 30,299.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,861.57 : 55,008.09 = 21,956.16 : x
  2. Step 2: Convert to fraction form
    39,861.57/55,008.09 = 21,956.16/x
  3. Step 3: Cross multiply
    39,861.57x = 55,008.09 × 21,956.16
  4. Step 4: Simplify right side
    39,861.57x = 1,207,766,425.33
  5. Step 5: Solve for x
    x = 1,207,766,425.33/39,861.57
  6. Step 6: Final answer
    x = 30,299.02

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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.