Home / 11,110.75-15,331.50-6,330.72

Finding the Fourth Proportional to 11,110.75, 15,331.50 and 6,330.72

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Solution

The fourth proportional to 11,110.75, 15,331.50 and 6,330.72 is: 8,735.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,110.75 : 15,331.50 = 6,330.72 : x
  2. Step 2: Convert to fraction form
    11,110.75/15,331.50 = 6,330.72/x
  3. Step 3: Cross multiply
    11,110.75x = 15,331.50 × 6,330.72
  4. Step 4: Simplify right side
    11,110.75x = 97,059,433.68
  5. Step 5: Solve for x
    x = 97,059,433.68/11,110.75
  6. Step 6: Final answer
    x = 8,735.63

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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.