Home / 12,778.76-17,634.00-7,400.26

Finding the Fourth Proportional to 12,778.76, 17,634.00 and 7,400.26

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Solution

The fourth proportional to 12,778.76, 17,634.00 and 7,400.26 is: 10,211.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.76 : 17,634.00 = 7,400.26 : x
  2. Step 2: Convert to fraction form
    12,778.76/17,634.00 = 7,400.26/x
  3. Step 3: Cross multiply
    12,778.76x = 17,634.00 × 7,400.26
  4. Step 4: Simplify right side
    12,778.76x = 130,496,234.63
  5. Step 5: Solve for x
    x = 130,496,234.63/12,778.76
  6. Step 6: Final answer
    x = 10,211.96

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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.