Home / 15,131.62-20,852.83-11,099.57

Finding the Fourth Proportional to 15,131.62, 20,852.83 and 11,099.57

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Solution

The fourth proportional to 15,131.62, 20,852.83 and 11,099.57 is: 15,296.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.62 : 20,852.83 = 11,099.57 : x
  2. Step 2: Convert to fraction form
    15,131.62/20,852.83 = 11,099.57/x
  3. Step 3: Cross multiply
    15,131.62x = 20,852.83 × 11,099.57
  4. Step 4: Simplify right side
    15,131.62x = 231,457,446.28
  5. Step 5: Solve for x
    x = 231,457,446.28/15,131.62
  6. Step 6: Final answer
    x = 15,296.28

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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.