Home / 13,947.76-20,908.44-5,176.72

Finding the Fourth Proportional to 13,947.76, 20,908.44 and 5,176.72

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Solution

The fourth proportional to 13,947.76, 20,908.44 and 5,176.72 is: 7,760.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,947.76 : 20,908.44 = 5,176.72 : x
  2. Step 2: Convert to fraction form
    13,947.76/20,908.44 = 5,176.72/x
  3. Step 3: Cross multiply
    13,947.76x = 20,908.44 × 5,176.72
  4. Step 4: Simplify right side
    13,947.76x = 108,237,139.52
  5. Step 5: Solve for x
    x = 108,237,139.52/13,947.76
  6. Step 6: Final answer
    x = 7,760.18

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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.