Home / 12,947.58-17,879.36-8,175.96

Finding the Fourth Proportional to 12,947.58, 17,879.36 and 8,175.96

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Solution

The fourth proportional to 12,947.58, 17,879.36 and 8,175.96 is: 11,290.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947.58 : 17,879.36 = 8,175.96 : x
  2. Step 2: Convert to fraction form
    12,947.58/17,879.36 = 8,175.96/x
  3. Step 3: Cross multiply
    12,947.58x = 17,879.36 × 8,175.96
  4. Step 4: Simplify right side
    12,947.58x = 146,180,891.31
  5. Step 5: Solve for x
    x = 146,180,891.31/12,947.58
  6. Step 6: Final answer
    x = 11,290.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.