Home / 13,487.54-20,213.69-7,240.21

Finding the Fourth Proportional to 13,487.54, 20,213.69 and 7,240.21

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Solution

The fourth proportional to 13,487.54, 20,213.69 and 7,240.21 is: 10,850.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.54 : 20,213.69 = 7,240.21 : x
  2. Step 2: Convert to fraction form
    13,487.54/20,213.69 = 7,240.21/x
  3. Step 3: Cross multiply
    13,487.54x = 20,213.69 × 7,240.21
  4. Step 4: Simplify right side
    13,487.54x = 146,351,273.74
  5. Step 5: Solve for x
    x = 146,351,273.74/13,487.54
  6. Step 6: Final answer
    x = 10,850.85

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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.