Home / 13,491.57-20,236.60-5,171.25

Finding the Fourth Proportional to 13,491.57, 20,236.60 and 5,171.25

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Solution

The fourth proportional to 13,491.57, 20,236.60 and 5,171.25 is: 7,756.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.57 : 20,236.60 = 5,171.25 : x
  2. Step 2: Convert to fraction form
    13,491.57/20,236.60 = 5,171.25/x
  3. Step 3: Cross multiply
    13,491.57x = 20,236.60 × 5,171.25
  4. Step 4: Simplify right side
    13,491.57x = 104,648,600.10
  5. Step 5: Solve for x
    x = 104,648,600.10/13,491.57
  6. Step 6: Final answer
    x = 7,756.59

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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.