Home / 12,916.97-19,378.53-4,151.88

Finding the Fourth Proportional to 12,916.97, 19,378.53 and 4,151.88

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Solution

The fourth proportional to 12,916.97, 19,378.53 and 4,151.88 is: 6,228.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.97 : 19,378.53 = 4,151.88 : x
  2. Step 2: Convert to fraction form
    12,916.97/19,378.53 = 4,151.88/x
  3. Step 3: Cross multiply
    12,916.97x = 19,378.53 × 4,151.88
  4. Step 4: Simplify right side
    12,916.97x = 80,457,379.80
  5. Step 5: Solve for x
    x = 80,457,379.80/12,916.97
  6. Step 6: Final answer
    x = 6,228.81

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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.