Home / 12,916.16-19,377.40-4,151.92

Finding the Fourth Proportional to 12,916.16, 19,377.40 and 4,151.92

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Solution

The fourth proportional to 12,916.16, 19,377.40 and 4,151.92 is: 6,228.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.16 : 19,377.40 = 4,151.92 : x
  2. Step 2: Convert to fraction form
    12,916.16/19,377.40 = 4,151.92/x
  3. Step 3: Cross multiply
    12,916.16x = 19,377.40 × 4,151.92
  4. Step 4: Simplify right side
    12,916.16x = 80,453,414.61
  5. Step 5: Solve for x
    x = 80,453,414.61/12,916.16
  6. Step 6: Final answer
    x = 6,228.90

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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.