Home / 12,746.70-19,120.05-3,981.62

Finding the Fourth Proportional to 12,746.70, 19,120.05 and 3,981.62

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Solution

The fourth proportional to 12,746.70, 19,120.05 and 3,981.62 is: 5,972.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,746.70 : 19,120.05 = 3,981.62 : x
  2. Step 2: Convert to fraction form
    12,746.70/19,120.05 = 3,981.62/x
  3. Step 3: Cross multiply
    12,746.70x = 19,120.05 × 3,981.62
  4. Step 4: Simplify right side
    12,746.70x = 76,128,821.28
  5. Step 5: Solve for x
    x = 76,128,821.28/12,746.70
  6. Step 6: Final answer
    x = 5,972.43

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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.