Home / 12,200.15-18,286.11-5,612.51

Finding the Fourth Proportional to 12,200.15, 18,286.11 and 5,612.51

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Solution

The fourth proportional to 12,200.15, 18,286.11 and 5,612.51 is: 8,412.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,200.15 : 18,286.11 = 5,612.51 : x
  2. Step 2: Convert to fraction form
    12,200.15/18,286.11 = 5,612.51/x
  3. Step 3: Cross multiply
    12,200.15x = 18,286.11 × 5,612.51
  4. Step 4: Simplify right side
    12,200.15x = 102,631,020.95
  5. Step 5: Solve for x
    x = 102,631,020.95/12,200.15
  6. Step 6: Final answer
    x = 8,412.27

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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.