Home / 12,143.45-18,215.63-4,244.42

Finding the Fourth Proportional to 12,143.45, 18,215.63 and 4,244.42

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Solution

The fourth proportional to 12,143.45, 18,215.63 and 4,244.42 is: 6,366.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.45 : 18,215.63 = 4,244.42 : x
  2. Step 2: Convert to fraction form
    12,143.45/18,215.63 = 4,244.42/x
  3. Step 3: Cross multiply
    12,143.45x = 18,215.63 × 4,244.42
  4. Step 4: Simplify right side
    12,143.45x = 77,314,784.28
  5. Step 5: Solve for x
    x = 77,314,784.28/12,143.45
  6. Step 6: Final answer
    x = 6,366.79

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Similar ratio
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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.