Home / 12,746.45-19,119.68-3,981.40

Finding the Fourth Proportional to 12,746.45, 19,119.68 and 3,981.40

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Solution

The fourth proportional to 12,746.45, 19,119.68 and 3,981.40 is: 5,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,746.45 : 19,119.68 = 3,981.40 : x
  2. Step 2: Convert to fraction form
    12,746.45/19,119.68 = 3,981.40/x
  3. Step 3: Cross multiply
    12,746.45x = 19,119.68 × 3,981.40
  4. Step 4: Simplify right side
    12,746.45x = 76,123,093.95
  5. Step 5: Solve for x
    x = 76,123,093.95/12,746.45
  6. Step 6: Final answer
    x = 5,972.10

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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.