Home / 28,408.38-39,203.84-15,662.07

Finding the Fourth Proportional to 28,408.38, 39,203.84 and 15,662.07

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Solution

The fourth proportional to 28,408.38, 39,203.84 and 15,662.07 is: 21,613.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.38 : 39,203.84 = 15,662.07 : x
  2. Step 2: Convert to fraction form
    28,408.38/39,203.84 = 15,662.07/x
  3. Step 3: Cross multiply
    28,408.38x = 39,203.84 × 15,662.07
  4. Step 4: Simplify right side
    28,408.38x = 614,013,286.35
  5. Step 5: Solve for x
    x = 614,013,286.35/28,408.38
  6. Step 6: Final answer
    x = 21,613.81

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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.