Home / 11,831.88-16,330.84-7,115.25

Finding the Fourth Proportional to 11,831.88, 16,330.84 and 7,115.25

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Solution

The fourth proportional to 11,831.88, 16,330.84 and 7,115.25 is: 9,820.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,831.88 : 16,330.84 = 7,115.25 : x
  2. Step 2: Convert to fraction form
    11,831.88/16,330.84 = 7,115.25/x
  3. Step 3: Cross multiply
    11,831.88x = 16,330.84 × 7,115.25
  4. Step 4: Simplify right side
    11,831.88x = 116,198,009.31
  5. Step 5: Solve for x
    x = 116,198,009.31/11,831.88
  6. Step 6: Final answer
    x = 9,820.76

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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.