Home / 39,149.87-54,027.20-21,245.02

Finding the Fourth Proportional to 39,149.87, 54,027.20 and 21,245.02

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Solution

The fourth proportional to 39,149.87, 54,027.20 and 21,245.02 is: 29,318.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,149.87 : 54,027.20 = 21,245.02 : x
  2. Step 2: Convert to fraction form
    39,149.87/54,027.20 = 21,245.02/x
  3. Step 3: Cross multiply
    39,149.87x = 54,027.20 × 21,245.02
  4. Step 4: Simplify right side
    39,149.87x = 1,147,808,862.59
  5. Step 5: Solve for x
    x = 1,147,808,862.59/39,149.87
  6. Step 6: Final answer
    x = 29,318.34

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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.