Home / 11,688.81-17,520.90-5,757.48

Finding the Fourth Proportional to 11,688.81, 17,520.90 and 5,757.48

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Solution

The fourth proportional to 11,688.81, 17,520.90 and 5,757.48 is: 8,630.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,688.81 : 17,520.90 = 5,757.48 : x
  2. Step 2: Convert to fraction form
    11,688.81/17,520.90 = 5,757.48/x
  3. Step 3: Cross multiply
    11,688.81x = 17,520.90 × 5,757.48
  4. Step 4: Simplify right side
    11,688.81x = 100,876,231.33
  5. Step 5: Solve for x
    x = 100,876,231.33/11,688.81
  6. Step 6: Final answer
    x = 8,630.15

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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.