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Finding the Fourth Proportional to 11,601.21, 16,007.01 and 7,831.38

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Solution

The fourth proportional to 11,601.21, 16,007.01 and 7,831.38 is: 10,805.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,601.21 : 16,007.01 = 7,831.38 : x
  2. Step 2: Convert to fraction form
    11,601.21/16,007.01 = 7,831.38/x
  3. Step 3: Cross multiply
    11,601.21x = 16,007.01 × 7,831.38
  4. Step 4: Simplify right side
    11,601.21x = 125,356,977.97
  5. Step 5: Solve for x
    x = 125,356,977.97/11,601.21
  6. Step 6: Final answer
    x = 10,805.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.