Home / 11,143.60-15,394.91-7,324.36

Finding the Fourth Proportional to 11,143.60, 15,394.91 and 7,324.36

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Solution

The fourth proportional to 11,143.60, 15,394.91 and 7,324.36 is: 10,118.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.60 : 15,394.91 = 7,324.36 : x
  2. Step 2: Convert to fraction form
    11,143.60/15,394.91 = 7,324.36/x
  3. Step 3: Cross multiply
    11,143.60x = 15,394.91 × 7,324.36
  4. Step 4: Simplify right side
    11,143.60x = 112,757,787.90
  5. Step 5: Solve for x
    x = 112,757,787.90/11,143.60
  6. Step 6: Final answer
    x = 10,118.62

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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.