Home / 11,440.40-15,788.78-6,725.38

Finding the Fourth Proportional to 11,440.40, 15,788.78 and 6,725.38

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Solution

The fourth proportional to 11,440.40, 15,788.78 and 6,725.38 is: 9,281.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,440.40 : 15,788.78 = 6,725.38 : x
  2. Step 2: Convert to fraction form
    11,440.40/15,788.78 = 6,725.38/x
  3. Step 3: Cross multiply
    11,440.40x = 15,788.78 × 6,725.38
  4. Step 4: Simplify right side
    11,440.40x = 106,185,545.24
  5. Step 5: Solve for x
    x = 106,185,545.24/11,440.40
  6. Step 6: Final answer
    x = 9,281.63

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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.