Home / 11,439.96-17,159.66-3,120.45

Finding the Fourth Proportional to 11,439.96, 17,159.66 and 3,120.45

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Solution

The fourth proportional to 11,439.96, 17,159.66 and 3,120.45 is: 4,680.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,439.96 : 17,159.66 = 3,120.45 : x
  2. Step 2: Convert to fraction form
    11,439.96/17,159.66 = 3,120.45/x
  3. Step 3: Cross multiply
    11,439.96x = 17,159.66 × 3,120.45
  4. Step 4: Simplify right side
    11,439.96x = 53,545,861.05
  5. Step 5: Solve for x
    x = 53,545,861.05/11,439.96
  6. Step 6: Final answer
    x = 4,680.60

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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.