Home / 12,916.40-19,375.32-4,151.60

Finding the Fourth Proportional to 12,916.40, 19,375.32 and 4,151.60

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Solution

The fourth proportional to 12,916.40, 19,375.32 and 4,151.60 is: 6,227.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.40 : 19,375.32 = 4,151.60 : x
  2. Step 2: Convert to fraction form
    12,916.40/19,375.32 = 4,151.60/x
  3. Step 3: Cross multiply
    12,916.40x = 19,375.32 × 4,151.60
  4. Step 4: Simplify right side
    12,916.40x = 80,438,578.51
  5. Step 5: Solve for x
    x = 80,438,578.51/12,916.40
  6. Step 6: Final answer
    x = 6,227.63

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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.