Home / 12,916.71-19,370.51-4,148.66

Finding the Fourth Proportional to 12,916.71, 19,370.51 and 4,148.66

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Solution

The fourth proportional to 12,916.71, 19,370.51 and 4,148.66 is: 6,221.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.71 : 19,370.51 = 4,148.66 : x
  2. Step 2: Convert to fraction form
    12,916.71/19,370.51 = 4,148.66/x
  3. Step 3: Cross multiply
    12,916.71x = 19,370.51 × 4,148.66
  4. Step 4: Simplify right side
    12,916.71x = 80,361,687.70
  5. Step 5: Solve for x
    x = 80,361,687.70/12,916.71
  6. Step 6: Final answer
    x = 6,221.53

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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.