Home / 12,618.25-18,930.36-3,852.61

Finding the Fourth Proportional to 12,618.25, 18,930.36 and 3,852.61

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Solution

The fourth proportional to 12,618.25, 18,930.36 and 3,852.61 is: 5,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.25 : 18,930.36 = 3,852.61 : x
  2. Step 2: Convert to fraction form
    12,618.25/18,930.36 = 3,852.61/x
  3. Step 3: Cross multiply
    12,618.25x = 18,930.36 × 3,852.61
  4. Step 4: Simplify right side
    12,618.25x = 72,931,294.24
  5. Step 5: Solve for x
    x = 72,931,294.24/12,618.25
  6. Step 6: Final answer
    x = 5,779.83

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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.