Home / 11,143.12-15,377.44-6,107.36

Finding the Fourth Proportional to 11,143.12, 15,377.44 and 6,107.36

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Solution

The fourth proportional to 11,143.12, 15,377.44 and 6,107.36 is: 8,428.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.12 : 15,377.44 = 6,107.36 : x
  2. Step 2: Convert to fraction form
    11,143.12/15,377.44 = 6,107.36/x
  3. Step 3: Cross multiply
    11,143.12x = 15,377.44 × 6,107.36
  4. Step 4: Simplify right side
    11,143.12x = 93,915,561.96
  5. Step 5: Solve for x
    x = 93,915,561.96/11,143.12
  6. Step 6: Final answer
    x = 8,428.12

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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.