Home / 9,119.50-13,661.39-8,127.72

Finding the Fourth Proportional to 9,119.50, 13,661.39 and 8,127.72

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Solution

The fourth proportional to 9,119.50, 13,661.39 and 8,127.72 is: 12,175.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,119.50 : 13,661.39 = 8,127.72 : x
  2. Step 2: Convert to fraction form
    9,119.50/13,661.39 = 8,127.72/x
  3. Step 3: Cross multiply
    9,119.50x = 13,661.39 × 8,127.72
  4. Step 4: Simplify right side
    9,119.50x = 111,035,952.73
  5. Step 5: Solve for x
    x = 111,035,952.73/9,119.50
  6. Step 6: Final answer
    x = 12,175.66

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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.