Home / 39,861.15-55,007.58-21,956.49

Finding the Fourth Proportional to 39,861.15, 55,007.58 and 21,956.49

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Solution

The fourth proportional to 39,861.15, 55,007.58 and 21,956.49 is: 30,299.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,861.15 : 55,007.58 = 21,956.49 : x
  2. Step 2: Convert to fraction form
    39,861.15/55,007.58 = 21,956.49/x
  3. Step 3: Cross multiply
    39,861.15x = 55,007.58 × 21,956.49
  4. Step 4: Simplify right side
    39,861.15x = 1,207,773,380.19
  5. Step 5: Solve for x
    x = 1,207,773,380.19/39,861.15
  6. Step 6: Final answer
    x = 30,299.51

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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.