Home / 10,831.38-14,947.20-6,115.56

Finding the Fourth Proportional to 10,831.38, 14,947.20 and 6,115.56

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Solution

The fourth proportional to 10,831.38, 14,947.20 and 6,115.56 is: 8,439.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,831.38 : 14,947.20 = 6,115.56 : x
  2. Step 2: Convert to fraction form
    10,831.38/14,947.20 = 6,115.56/x
  3. Step 3: Cross multiply
    10,831.38x = 14,947.20 × 6,115.56
  4. Step 4: Simplify right side
    10,831.38x = 91,410,498.43
  5. Step 5: Solve for x
    x = 91,410,498.43/10,831.38
  6. Step 6: Final answer
    x = 8,439.41

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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.