Home / 13,102.29-19,635.72-7,170.21

Finding the Fourth Proportional to 13,102.29, 19,635.72 and 7,170.21

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Solution

The fourth proportional to 13,102.29, 19,635.72 and 7,170.21 is: 10,745.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,102.29 : 19,635.72 = 7,170.21 : x
  2. Step 2: Convert to fraction form
    13,102.29/19,635.72 = 7,170.21/x
  3. Step 3: Cross multiply
    13,102.29x = 19,635.72 × 7,170.21
  4. Step 4: Simplify right side
    13,102.29x = 140,792,235.90
  5. Step 5: Solve for x
    x = 140,792,235.90/13,102.29
  6. Step 6: Final answer
    x = 10,745.62

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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.