Home / 39,385.37-54,351.81-21,480.42

Finding the Fourth Proportional to 39,385.37, 54,351.81 and 21,480.42

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Solution

The fourth proportional to 39,385.37, 54,351.81 and 21,480.42 is: 29,642.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,385.37 : 54,351.81 = 21,480.42 : x
  2. Step 2: Convert to fraction form
    39,385.37/54,351.81 = 21,480.42/x
  3. Step 3: Cross multiply
    39,385.37x = 54,351.81 × 21,480.42
  4. Step 4: Simplify right side
    39,385.37x = 1,167,499,910.38
  5. Step 5: Solve for x
    x = 1,167,499,910.38/39,385.37
  6. Step 6: Final answer
    x = 29,642.98

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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.