Home / 11,513.25-15,889.86-6,479.46

Finding the Fourth Proportional to 11,513.25, 15,889.86 and 6,479.46

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Solution

The fourth proportional to 11,513.25, 15,889.86 and 6,479.46 is: 8,942.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,513.25 : 15,889.86 = 6,479.46 : x
  2. Step 2: Convert to fraction form
    11,513.25/15,889.86 = 6,479.46/x
  3. Step 3: Cross multiply
    11,513.25x = 15,889.86 × 6,479.46
  4. Step 4: Simplify right side
    11,513.25x = 102,957,712.28
  5. Step 5: Solve for x
    x = 102,957,712.28/11,513.25
  6. Step 6: Final answer
    x = 8,942.54

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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.