Home / 28,185.06-42,279.99-7,408.50

Finding the Fourth Proportional to 28,185.06, 42,279.99 and 7,408.50

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Solution

The fourth proportional to 28,185.06, 42,279.99 and 7,408.50 is: 11,113.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,185.06 : 42,279.99 = 7,408.50 : x
  2. Step 2: Convert to fraction form
    28,185.06/42,279.99 = 7,408.50/x
  3. Step 3: Cross multiply
    28,185.06x = 42,279.99 × 7,408.50
  4. Step 4: Simplify right side
    28,185.06x = 313,231,305.92
  5. Step 5: Solve for x
    x = 313,231,305.92/28,185.06
  6. Step 6: Final answer
    x = 11,113.38

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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.