Home / 12,916.83-19,370.69-4,148.79

Finding the Fourth Proportional to 12,916.83, 19,370.69 and 4,148.79

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Solution

The fourth proportional to 12,916.83, 19,370.69 and 4,148.79 is: 6,221.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916.83 : 19,370.69 = 4,148.79 : x
  2. Step 2: Convert to fraction form
    12,916.83/19,370.69 = 4,148.79/x
  3. Step 3: Cross multiply
    12,916.83x = 19,370.69 × 4,148.79
  4. Step 4: Simplify right side
    12,916.83x = 80,364,828.11
  5. Step 5: Solve for x
    x = 80,364,828.11/12,916.83
  6. Step 6: Final answer
    x = 6,221.71

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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.