Home / 27,980.12-41,999.36-12,408.68

Finding the Fourth Proportional to 27,980.12, 41,999.36 and 12,408.68

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Solution

The fourth proportional to 27,980.12, 41,999.36 and 12,408.68 is: 18,625.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,980.12 : 41,999.36 = 12,408.68 : x
  2. Step 2: Convert to fraction form
    27,980.12/41,999.36 = 12,408.68/x
  3. Step 3: Cross multiply
    27,980.12x = 41,999.36 × 12,408.68
  4. Step 4: Simplify right side
    27,980.12x = 521,156,618.44
  5. Step 5: Solve for x
    x = 521,156,618.44/27,980.12
  6. Step 6: Final answer
    x = 18,625.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.