Home / 12,746.90-19,120.68-6,171.86

Finding the Fourth Proportional to 12,746.90, 19,120.68 and 6,171.86

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Solution

The fourth proportional to 12,746.90, 19,120.68 and 6,171.86 is: 9,257.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,746.90 : 19,120.68 = 6,171.86 : x
  2. Step 2: Convert to fraction form
    12,746.90/19,120.68 = 6,171.86/x
  3. Step 3: Cross multiply
    12,746.90x = 19,120.68 × 6,171.86
  4. Step 4: Simplify right side
    12,746.90x = 118,010,160.06
  5. Step 5: Solve for x
    x = 118,010,160.06/12,746.90
  6. Step 6: Final answer
    x = 9,257.95

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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.