Home / 13,399.85-20,101.70-7,156.44

Finding the Fourth Proportional to 13,399.85, 20,101.70 and 7,156.44

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Solution

The fourth proportional to 13,399.85, 20,101.70 and 7,156.44 is: 10,735.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.85 : 20,101.70 = 7,156.44 : x
  2. Step 2: Convert to fraction form
    13,399.85/20,101.70 = 7,156.44/x
  3. Step 3: Cross multiply
    13,399.85x = 20,101.70 × 7,156.44
  4. Step 4: Simplify right side
    13,399.85x = 143,856,627.84
  5. Step 5: Solve for x
    x = 143,856,627.84/13,399.85
  6. Step 6: Final answer
    x = 10,735.69

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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.