Home / 39,815.52-54,944.01-21,910.05

Finding the Fourth Proportional to 39,815.52, 54,944.01 and 21,910.05

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Solution

The fourth proportional to 39,815.52, 54,944.01 and 21,910.05 is: 30,235.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,815.52 : 54,944.01 = 21,910.05 : x
  2. Step 2: Convert to fraction form
    39,815.52/54,944.01 = 21,910.05/x
  3. Step 3: Cross multiply
    39,815.52x = 54,944.01 × 21,910.05
  4. Step 4: Simplify right side
    39,815.52x = 1,203,826,006.30
  5. Step 5: Solve for x
    x = 1,203,826,006.30/39,815.52
  6. Step 6: Final answer
    x = 30,235.09

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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.