Home / 13,831.40-20,736.54-6,910.76

Finding the Fourth Proportional to 13,831.40, 20,736.54 and 6,910.76

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Solution

The fourth proportional to 13,831.40, 20,736.54 and 6,910.76 is: 10,360.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.40 : 20,736.54 = 6,910.76 : x
  2. Step 2: Convert to fraction form
    13,831.40/20,736.54 = 6,910.76/x
  3. Step 3: Cross multiply
    13,831.40x = 20,736.54 × 6,910.76
  4. Step 4: Simplify right side
    13,831.40x = 143,305,251.17
  5. Step 5: Solve for x
    x = 143,305,251.17/13,831.40
  6. Step 6: Final answer
    x = 10,360.86

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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.