Home / 10,928.39-15,079.37-6,211.76

Finding the Fourth Proportional to 10,928.39, 15,079.37 and 6,211.76

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Solution

The fourth proportional to 10,928.39, 15,079.37 and 6,211.76 is: 8,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,928.39 : 15,079.37 = 6,211.76 : x
  2. Step 2: Convert to fraction form
    10,928.39/15,079.37 = 6,211.76/x
  3. Step 3: Cross multiply
    10,928.39x = 15,079.37 × 6,211.76
  4. Step 4: Simplify right side
    10,928.39x = 93,669,320.94
  5. Step 5: Solve for x
    x = 93,669,320.94/10,928.39
  6. Step 6: Final answer
    x = 8,571.20

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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.