Home / 12,899.92-19,351.58-4,131.76

Finding the Fourth Proportional to 12,899.92, 19,351.58 and 4,131.76

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Solution

The fourth proportional to 12,899.92, 19,351.58 and 4,131.76 is: 6,198.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.92 : 19,351.58 = 4,131.76 : x
  2. Step 2: Convert to fraction form
    12,899.92/19,351.58 = 4,131.76/x
  3. Step 3: Cross multiply
    12,899.92x = 19,351.58 × 4,131.76
  4. Step 4: Simplify right side
    12,899.92x = 79,956,084.18
  5. Step 5: Solve for x
    x = 79,956,084.18/12,899.92
  6. Step 6: Final answer
    x = 6,198.18

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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.