Home / 39,400.80-54,371.45-21,494.73

Finding the Fourth Proportional to 39,400.80, 54,371.45 and 21,494.73

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Solution

The fourth proportional to 39,400.80, 54,371.45 and 21,494.73 is: 29,661.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,400.80 : 54,371.45 = 21,494.73 : x
  2. Step 2: Convert to fraction form
    39,400.80/54,371.45 = 21,494.73/x
  3. Step 3: Cross multiply
    39,400.80x = 54,371.45 × 21,494.73
  4. Step 4: Simplify right side
    39,400.80x = 1,168,699,895.09
  5. Step 5: Solve for x
    x = 1,168,699,895.09/39,400.80
  6. Step 6: Final answer
    x = 29,661.83

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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.