Home / 31,120.14-46,679.79-7,746.78

Finding the Fourth Proportional to 31,120.14, 46,679.79 and 7,746.78

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Solution

The fourth proportional to 31,120.14, 46,679.79 and 7,746.78 is: 11,620.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,120.14 : 46,679.79 = 7,746.78 : x
  2. Step 2: Convert to fraction form
    31,120.14/46,679.79 = 7,746.78/x
  3. Step 3: Cross multiply
    31,120.14x = 46,679.79 × 7,746.78
  4. Step 4: Simplify right side
    31,120.14x = 361,618,063.58
  5. Step 5: Solve for x
    x = 361,618,063.58/31,120.14
  6. Step 6: Final answer
    x = 11,620.07

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1.5x scale

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.