Home / 11,831.40-17,747.10-4,919.40

Finding the Fourth Proportional to 11,831.40, 17,747.10 and 4,919.40

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Solution

The fourth proportional to 11,831.40, 17,747.10 and 4,919.40 is: 7,379.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,831.40 : 17,747.10 = 4,919.40 : x
  2. Step 2: Convert to fraction form
    11,831.40/17,747.10 = 4,919.40/x
  3. Step 3: Cross multiply
    11,831.40x = 17,747.10 × 4,919.40
  4. Step 4: Simplify right side
    11,831.40x = 87,305,083.74
  5. Step 5: Solve for x
    x = 87,305,083.74/11,831.40
  6. Step 6: Final answer
    x = 7,379.10

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1.5x scale

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.