Home / 10,831.53-14,947.56-6,115.86

Finding the Fourth Proportional to 10,831.53, 14,947.56 and 6,115.86

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Solution

The fourth proportional to 10,831.53, 14,947.56 and 6,115.86 is: 8,439.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,831.53 : 14,947.56 = 6,115.86 : x
  2. Step 2: Convert to fraction form
    10,831.53/14,947.56 = 6,115.86/x
  3. Step 3: Cross multiply
    10,831.53x = 14,947.56 × 6,115.86
  4. Step 4: Simplify right side
    10,831.53x = 91,417,184.30
  5. Step 5: Solve for x
    x = 91,417,184.30/10,831.53
  6. Step 6: Final answer
    x = 8,439.91

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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.