Home / 11,887.86-17,831.76-4,871.15

Finding the Fourth Proportional to 11,887.86, 17,831.76 and 4,871.15

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Solution

The fourth proportional to 11,887.86, 17,831.76 and 4,871.15 is: 7,306.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.86 : 17,831.76 = 4,871.15 : x
  2. Step 2: Convert to fraction form
    11,887.86/17,831.76 = 4,871.15/x
  3. Step 3: Cross multiply
    11,887.86x = 17,831.76 × 4,871.15
  4. Step 4: Simplify right side
    11,887.86x = 86,861,088.57
  5. Step 5: Solve for x
    x = 86,861,088.57/11,887.86
  6. Step 6: Final answer
    x = 7,306.71

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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.