Home / 11,011.55-16,512.53-3,989.91

Finding the Fourth Proportional to 11,011.55, 16,512.53 and 3,989.91

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Solution

The fourth proportional to 11,011.55, 16,512.53 and 3,989.91 is: 5,983.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,011.55 : 16,512.53 = 3,989.91 : x
  2. Step 2: Convert to fraction form
    11,011.55/16,512.53 = 3,989.91/x
  3. Step 3: Cross multiply
    11,011.55x = 16,512.53 × 3,989.91
  4. Step 4: Simplify right side
    11,011.55x = 65,883,491.33
  5. Step 5: Solve for x
    x = 65,883,491.33/11,011.55
  6. Step 6: Final answer
    x = 5,983.13

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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.