Home / 13,678.46-20,517.28-5,672.42

Finding the Fourth Proportional to 13,678.46, 20,517.28 and 5,672.42

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Solution

The fourth proportional to 13,678.46, 20,517.28 and 5,672.42 is: 8,508.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.46 : 20,517.28 = 5,672.42 : x
  2. Step 2: Convert to fraction form
    13,678.46/20,517.28 = 5,672.42/x
  3. Step 3: Cross multiply
    13,678.46x = 20,517.28 × 5,672.42
  4. Step 4: Simplify right side
    13,678.46x = 116,382,578.12
  5. Step 5: Solve for x
    x = 116,382,578.12/13,678.46
  6. Step 6: Final answer
    x = 8,508.46

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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.