Home / 12,127.46-18,195.63-5,109.23

Finding the Fourth Proportional to 12,127.46, 18,195.63 and 5,109.23

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Solution

The fourth proportional to 12,127.46, 18,195.63 and 5,109.23 is: 7,665.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.46 : 18,195.63 = 5,109.23 : x
  2. Step 2: Convert to fraction form
    12,127.46/18,195.63 = 5,109.23/x
  3. Step 3: Cross multiply
    12,127.46x = 18,195.63 × 5,109.23
  4. Step 4: Simplify right side
    12,127.46x = 92,965,658.66
  5. Step 5: Solve for x
    x = 92,965,658.66/12,127.46
  6. Step 6: Final answer
    x = 7,665.72

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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.