Home / 39,408.24-54,382.30-21,503.24

Finding the Fourth Proportional to 39,408.24, 54,382.30 and 21,503.24

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Solution

The fourth proportional to 39,408.24, 54,382.30 and 21,503.24 is: 29,673.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,408.24 : 54,382.30 = 21,503.24 : x
  2. Step 2: Convert to fraction form
    39,408.24/54,382.30 = 21,503.24/x
  3. Step 3: Cross multiply
    39,408.24x = 54,382.30 × 21,503.24
  4. Step 4: Simplify right side
    39,408.24x = 1,169,395,648.65
  5. Step 5: Solve for x
    x = 1,169,395,648.65/39,408.24
  6. Step 6: Final answer
    x = 29,673.89

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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.