Home / 12,079.87-18,119.70-3,314.79

Finding the Fourth Proportional to 12,079.87, 18,119.70 and 3,314.79

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Solution

The fourth proportional to 12,079.87, 18,119.70 and 3,314.79 is: 4,972.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.87 : 18,119.70 = 3,314.79 : x
  2. Step 2: Convert to fraction form
    12,079.87/18,119.70 = 3,314.79/x
  3. Step 3: Cross multiply
    12,079.87x = 18,119.70 × 3,314.79
  4. Step 4: Simplify right side
    12,079.87x = 60,063,000.36
  5. Step 5: Solve for x
    x = 60,063,000.36/12,079.87
  6. Step 6: Final answer
    x = 4,972.16

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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.