Home / 39,149.87-58,672.49-20,390.54

Finding the Fourth Proportional to 39,149.87, 58,672.49 and 20,390.54

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Solution

The fourth proportional to 39,149.87, 58,672.49 and 20,390.54 is: 30,558.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,149.87 : 58,672.49 = 20,390.54 : x
  2. Step 2: Convert to fraction form
    39,149.87/58,672.49 = 20,390.54/x
  3. Step 3: Cross multiply
    39,149.87x = 58,672.49 × 20,390.54
  4. Step 4: Simplify right side
    39,149.87x = 1,196,363,358.93
  5. Step 5: Solve for x
    x = 1,196,363,358.93/39,149.87
  6. Step 6: Final answer
    x = 30,558.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.