Home / 39,639.20-54,739.12-25,516.56

Finding the Fourth Proportional to 39,639.20, 54,739.12 and 25,516.56

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Solution

The fourth proportional to 39,639.20, 54,739.12 and 25,516.56 is: 35,236.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,639.20 : 54,739.12 = 25,516.56 : x
  2. Step 2: Convert to fraction form
    39,639.20/54,739.12 = 25,516.56/x
  3. Step 3: Cross multiply
    39,639.20x = 54,739.12 × 25,516.56
  4. Step 4: Simplify right side
    39,639.20x = 1,396,754,039.83
  5. Step 5: Solve for x
    x = 1,396,754,039.83/39,639.20
  6. Step 6: Final answer
    x = 35,236.69

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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.