Home / 11,143.76-15,377.78-6,107.68

Finding the Fourth Proportional to 11,143.76, 15,377.78 and 6,107.68

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Solution

The fourth proportional to 11,143.76, 15,377.78 and 6,107.68 is: 8,428.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.76 : 15,377.78 = 6,107.68 : x
  2. Step 2: Convert to fraction form
    11,143.76/15,377.78 = 6,107.68/x
  3. Step 3: Cross multiply
    11,143.76x = 15,377.78 × 6,107.68
  4. Step 4: Simplify right side
    11,143.76x = 93,922,559.35
  5. Step 5: Solve for x
    x = 93,922,559.35/11,143.76
  6. Step 6: Final answer
    x = 8,428.26

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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.