Home / 12,746.97-19,110.74-8,120.25

Finding the Fourth Proportional to 12,746.97, 19,110.74 and 8,120.25

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Solution

The fourth proportional to 12,746.97, 19,110.74 and 8,120.25 is: 12,174.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,746.97 : 19,110.74 = 8,120.25 : x
  2. Step 2: Convert to fraction form
    12,746.97/19,110.74 = 8,120.25/x
  3. Step 3: Cross multiply
    12,746.97x = 19,110.74 × 8,120.25
  4. Step 4: Simplify right side
    12,746.97x = 155,183,945.88
  5. Step 5: Solve for x
    x = 155,183,945.88/12,746.97
  6. Step 6: Final answer
    x = 12,174.18

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1.5x scale

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.