Home / 13,731.38-18,949.19-7,764.22

Finding the Fourth Proportional to 13,731.38, 18,949.19 and 7,764.22

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Solution

The fourth proportional to 13,731.38, 18,949.19 and 7,764.22 is: 10,714.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.38 : 18,949.19 = 7,764.22 : x
  2. Step 2: Convert to fraction form
    13,731.38/18,949.19 = 7,764.22/x
  3. Step 3: Cross multiply
    13,731.38x = 18,949.19 × 7,764.22
  4. Step 4: Simplify right side
    13,731.38x = 147,125,679.98
  5. Step 5: Solve for x
    x = 147,125,679.98/13,731.38
  6. Step 6: Final answer
    x = 10,714.56

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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.