Home / 30,408.78-41,993.10-28,752.15

Finding the Fourth Proportional to 30,408.78, 41,993.10 and 28,752.15

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Solution

The fourth proportional to 30,408.78, 41,993.10 and 28,752.15 is: 39,705.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,408.78 : 41,993.10 = 28,752.15 : x
  2. Step 2: Convert to fraction form
    30,408.78/41,993.10 = 28,752.15/x
  3. Step 3: Cross multiply
    30,408.78x = 41,993.10 × 28,752.15
  4. Step 4: Simplify right side
    30,408.78x = 1,207,391,910.17
  5. Step 5: Solve for x
    x = 1,207,391,910.17/30,408.78
  6. Step 6: Final answer
    x = 39,705.37

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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.