Home / 13,731.91-18,950.85-7,764.14

Finding the Fourth Proportional to 13,731.91, 18,950.85 and 7,764.14

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Solution

The fourth proportional to 13,731.91, 18,950.85 and 7,764.14 is: 10,714.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.91 : 18,950.85 = 7,764.14 : x
  2. Step 2: Convert to fraction form
    13,731.91/18,950.85 = 7,764.14/x
  3. Step 3: Cross multiply
    13,731.91x = 18,950.85 × 7,764.14
  4. Step 4: Simplify right side
    13,731.91x = 147,137,052.52
  5. Step 5: Solve for x
    x = 147,137,052.52/13,731.91
  6. Step 6: Final answer
    x = 10,714.97

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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.