Home / 39,581.45-54,621.96-21,675.38

Finding the Fourth Proportional to 39,581.45, 54,621.96 and 21,675.38

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Solution

The fourth proportional to 39,581.45, 54,621.96 and 21,675.38 is: 29,911.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,581.45 : 54,621.96 = 21,675.38 : x
  2. Step 2: Convert to fraction form
    39,581.45/54,621.96 = 21,675.38/x
  3. Step 3: Cross multiply
    39,581.45x = 54,621.96 × 21,675.38
  4. Step 4: Simplify right side
    39,581.45x = 1,183,951,466.24
  5. Step 5: Solve for x
    x = 1,183,951,466.24/39,581.45
  6. Step 6: Final answer
    x = 29,911.78

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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.