Home / 12,143.12-18,194.63-5,554.79

Finding the Fourth Proportional to 12,143.12, 18,194.63 and 5,554.79

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Solution

The fourth proportional to 12,143.12, 18,194.63 and 5,554.79 is: 8,323.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.12 : 18,194.63 = 5,554.79 : x
  2. Step 2: Convert to fraction form
    12,143.12/18,194.63 = 5,554.79/x
  3. Step 3: Cross multiply
    12,143.12x = 18,194.63 × 5,554.79
  4. Step 4: Simplify right side
    12,143.12x = 101,067,230.03
  5. Step 5: Solve for x
    x = 101,067,230.03/12,143.12
  6. Step 6: Final answer
    x = 8,323.01

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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.