Home / 13,831.40-20,747.10-5,067.20

Finding the Fourth Proportional to 13,831.40, 20,747.10 and 5,067.20

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Solution

The fourth proportional to 13,831.40, 20,747.10 and 5,067.20 is: 7,600.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.40 : 20,747.10 = 5,067.20 : x
  2. Step 2: Convert to fraction form
    13,831.40/20,747.10 = 5,067.20/x
  3. Step 3: Cross multiply
    13,831.40x = 20,747.10 × 5,067.20
  4. Step 4: Simplify right side
    13,831.40x = 105,129,705.12
  5. Step 5: Solve for x
    x = 105,129,705.12/13,831.40
  6. Step 6: Final answer
    x = 7,600.80

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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.