Home / 28,408.49-39,203.99-15,662.14

Finding the Fourth Proportional to 28,408.49, 39,203.99 and 15,662.14

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Solution

The fourth proportional to 28,408.49, 39,203.99 and 15,662.14 is: 21,613.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,408.49 : 39,203.99 = 15,662.14 : x
  2. Step 2: Convert to fraction form
    28,408.49/39,203.99 = 15,662.14/x
  3. Step 3: Cross multiply
    28,408.49x = 39,203.99 × 15,662.14
  4. Step 4: Simplify right side
    28,408.49x = 614,018,379.94
  5. Step 5: Solve for x
    x = 614,018,379.94/28,408.49
  6. Step 6: Final answer
    x = 21,613.90

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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.