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Finding the Fourth Proportional to 11,688.96, 17,532.48 and 3,480.96

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Solution

The fourth proportional to 11,688.96, 17,532.48 and 3,480.96 is: 5,221.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.96 : 17,532.48 = 3,480.96 : x
  2. Step 2: Convert to fraction form
    11,688.96/17,532.48 = 3,480.96/x
  3. Step 3: Cross multiply
    11,688.96x = 17,532.48 × 3,480.96
  4. Step 4: Simplify right side
    11,688.96x = 61,029,861.58
  5. Step 5: Solve for x
    x = 61,029,861.58/11,688.96
  6. Step 6: Final answer
    x = 5,221.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.