Home / 13,490.45-20,234.91-5,170.13

Finding the Fourth Proportional to 13,490.45, 20,234.91 and 5,170.13

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Solution

The fourth proportional to 13,490.45, 20,234.91 and 5,170.13 is: 7,754.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.45 : 20,234.91 = 5,170.13 : x
  2. Step 2: Convert to fraction form
    13,490.45/20,234.91 = 5,170.13/x
  3. Step 3: Cross multiply
    13,490.45x = 20,234.91 × 5,170.13
  4. Step 4: Simplify right side
    13,490.45x = 104,617,109.33
  5. Step 5: Solve for x
    x = 104,617,109.33/13,490.45
  6. Step 6: Final answer
    x = 7,754.90

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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.