Home / 12,219.66-18,331.92-5,199.66

Finding the Fourth Proportional to 12,219.66, 18,331.92 and 5,199.66

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Solution

The fourth proportional to 12,219.66, 18,331.92 and 5,199.66 is: 7,800.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.66 : 18,331.92 = 5,199.66 : x
  2. Step 2: Convert to fraction form
    12,219.66/18,331.92 = 5,199.66/x
  3. Step 3: Cross multiply
    12,219.66x = 18,331.92 × 5,199.66
  4. Step 4: Simplify right side
    12,219.66x = 95,319,751.15
  5. Step 5: Solve for x
    x = 95,319,751.15/12,219.66
  6. Step 6: Final answer
    x = 7,800.52

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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.