Home / 31,121.92-46,682.80-7,748.36

Finding the Fourth Proportional to 31,121.92, 46,682.80 and 7,748.36

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Solution

The fourth proportional to 31,121.92, 46,682.80 and 7,748.36 is: 11,622.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,121.92 : 46,682.80 = 7,748.36 : x
  2. Step 2: Convert to fraction form
    31,121.92/46,682.80 = 7,748.36/x
  3. Step 3: Cross multiply
    31,121.92x = 46,682.80 × 7,748.36
  4. Step 4: Simplify right side
    31,121.92x = 361,715,062.48
  5. Step 5: Solve for x
    x = 361,715,062.48/31,121.92
  6. Step 6: Final answer
    x = 11,622.52

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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.