Home / 12,719.85-19,080.68-3,359.77

Finding the Fourth Proportional to 12,719.85, 19,080.68 and 3,359.77

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Solution

The fourth proportional to 12,719.85, 19,080.68 and 3,359.77 is: 5,039.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,719.85 : 19,080.68 = 3,359.77 : x
  2. Step 2: Convert to fraction form
    12,719.85/19,080.68 = 3,359.77/x
  3. Step 3: Cross multiply
    12,719.85x = 19,080.68 × 3,359.77
  4. Step 4: Simplify right side
    12,719.85x = 64,106,724.29
  5. Step 5: Solve for x
    x = 64,106,724.29/12,719.85
  6. Step 6: Final answer
    x = 5,039.90

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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.