Home / 11,220.46-15,481.74-6,440.11

Finding the Fourth Proportional to 11,220.46, 15,481.74 and 6,440.11

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Solution

The fourth proportional to 11,220.46, 15,481.74 and 6,440.11 is: 8,885.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,220.46 : 15,481.74 = 6,440.11 : x
  2. Step 2: Convert to fraction form
    11,220.46/15,481.74 = 6,440.11/x
  3. Step 3: Cross multiply
    11,220.46x = 15,481.74 × 6,440.11
  4. Step 4: Simplify right side
    11,220.46x = 99,704,108.59
  5. Step 5: Solve for x
    x = 99,704,108.59/11,220.46
  6. Step 6: Final answer
    x = 8,885.92

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Half scale
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Double scale
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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.