Home / 13,946.91-20,920.21-3,416.97

Finding the Fourth Proportional to 13,946.91, 20,920.21 and 3,416.97

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Solution

The fourth proportional to 13,946.91, 20,920.21 and 3,416.97 is: 5,125.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,946.91 : 20,920.21 = 3,416.97 : x
  2. Step 2: Convert to fraction form
    13,946.91/20,920.21 = 3,416.97/x
  3. Step 3: Cross multiply
    13,946.91x = 20,920.21 × 3,416.97
  4. Step 4: Simplify right side
    13,946.91x = 71,483,729.96
  5. Step 5: Solve for x
    x = 71,483,729.96/13,946.91
  6. Step 6: Final answer
    x = 5,125.42

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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.