Home / 10,831.20-16,247.68-3,040.64

Finding the Fourth Proportional to 10,831.20, 16,247.68 and 3,040.64

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Solution

The fourth proportional to 10,831.20, 16,247.68 and 3,040.64 is: 4,561.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,831.20 : 16,247.68 = 3,040.64 : x
  2. Step 2: Convert to fraction form
    10,831.20/16,247.68 = 3,040.64/x
  3. Step 3: Cross multiply
    10,831.20x = 16,247.68 × 3,040.64
  4. Step 4: Simplify right side
    10,831.20x = 49,403,345.72
  5. Step 5: Solve for x
    x = 49,403,345.72/10,831.20
  6. Step 6: Final answer
    x = 4,561.21

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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.