Home / 12,121,279.20-18,181,918.80-3,145,831.20

Finding the Fourth Proportional to 12,121,279.20, 18,181,918.80 and 3,145,831.20

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Solution

The fourth proportional to 12,121,279.20, 18,181,918.80 and 3,145,831.20 is: 4,718,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121,279.20 : 18,181,918.80 = 3,145,831.20 : x
  2. Step 2: Convert to fraction form
    12,121,279.20/18,181,918.80 = 3,145,831.20/x
  3. Step 3: Cross multiply
    12,121,279.20x = 18,181,918.80 × 3,145,831.20
  4. Step 4: Simplify right side
    12,121,279.20x = 57,197,247,436,906.56
  5. Step 5: Solve for x
    x = 57,197,247,436,906.56/12,121,279.20
  6. Step 6: Final answer
    x = 4,718,746.80

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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.