Home / 21,150,719.66-31,726,188.97-9,628,128.71

Finding the Fourth Proportional to 21,150,719.66, 31,726,188.97 and 9,628,128.71

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Solution

The fourth proportional to 21,150,719.66, 31,726,188.97 and 9,628,128.71 is: 14,442,242.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150,719.66 : 31,726,188.97 = 9,628,128.71 : x
  2. Step 2: Convert to fraction form
    21,150,719.66/31,726,188.97 = 9,628,128.71/x
  3. Step 3: Cross multiply
    21,150,719.66x = 31,726,188.97 × 9,628,128.71
  4. Step 4: Simplify right side
    21,150,719.66x = 305,463,830,722,311.38
  5. Step 5: Solve for x
    x = 305,463,830,722,311.38/21,150,719.66
  6. Step 6: Final answer
    x = 14,442,242.90

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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.