Home / 12,885.38-19,328.83-4,119.61

Finding the Fourth Proportional to 12,885.38, 19,328.83 and 4,119.61

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Solution

The fourth proportional to 12,885.38, 19,328.83 and 4,119.61 is: 6,179.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.38 : 19,328.83 = 4,119.61 : x
  2. Step 2: Convert to fraction form
    12,885.38/19,328.83 = 4,119.61/x
  3. Step 3: Cross multiply
    12,885.38x = 19,328.83 × 4,119.61
  4. Step 4: Simplify right side
    12,885.38x = 79,627,218.98
  5. Step 5: Solve for x
    x = 79,627,218.98/12,885.38
  6. Step 6: Final answer
    x = 6,179.66

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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.