Home / 14,185.15-21,290.87-7,170.12

Finding the Fourth Proportional to 14,185.15, 21,290.87 and 7,170.12

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Solution

The fourth proportional to 14,185.15, 21,290.87 and 7,170.12 is: 10,761.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,185.15 : 21,290.87 = 7,170.12 : x
  2. Step 2: Convert to fraction form
    14,185.15/21,290.87 = 7,170.12/x
  3. Step 3: Cross multiply
    14,185.15x = 21,290.87 × 7,170.12
  4. Step 4: Simplify right side
    14,185.15x = 152,658,163.68
  5. Step 5: Solve for x
    x = 152,658,163.68/14,185.15
  6. Step 6: Final answer
    x = 10,761.83

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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.