Home / 12,207.94-18,299.14-5,638.43

Finding the Fourth Proportional to 12,207.94, 18,299.14 and 5,638.43

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Solution

The fourth proportional to 12,207.94, 18,299.14 and 5,638.43 is: 8,451.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,207.94 : 18,299.14 = 5,638.43 : x
  2. Step 2: Convert to fraction form
    12,207.94/18,299.14 = 5,638.43/x
  3. Step 3: Cross multiply
    12,207.94x = 18,299.14 × 5,638.43
  4. Step 4: Simplify right side
    12,207.94x = 103,178,451.60
  5. Step 5: Solve for x
    x = 103,178,451.60/12,207.94
  6. Step 6: Final answer
    x = 8,451.75

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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.