Home / 12,126.65-18,192.72-3,806.64

Finding the Fourth Proportional to 12,126.65, 18,192.72 and 3,806.64

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Solution

The fourth proportional to 12,126.65, 18,192.72 and 3,806.64 is: 5,710.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.65 : 18,192.72 = 3,806.64 : x
  2. Step 2: Convert to fraction form
    12,126.65/18,192.72 = 3,806.64/x
  3. Step 3: Cross multiply
    12,126.65x = 18,192.72 × 3,806.64
  4. Step 4: Simplify right side
    12,126.65x = 69,253,135.66
  5. Step 5: Solve for x
    x = 69,253,135.66/12,126.65
  6. Step 6: Final answer
    x = 5,710.82

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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.