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Finding the Fourth Proportional to 12,226.88, 18,336.90 and 4,831.14

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Solution

The fourth proportional to 12,226.88, 18,336.90 and 4,831.14 is: 7,245.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,226.88 : 18,336.90 = 4,831.14 : x
  2. Step 2: Convert to fraction form
    12,226.88/18,336.90 = 4,831.14/x
  3. Step 3: Cross multiply
    12,226.88x = 18,336.90 × 4,831.14
  4. Step 4: Simplify right side
    12,226.88x = 88,588,131.07
  5. Step 5: Solve for x
    x = 88,588,131.07/12,226.88
  6. Step 6: Final answer
    x = 7,245.36

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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.