Home / 11,778.98-16,255.42-6,474.20

Finding the Fourth Proportional to 11,778.98, 16,255.42 and 6,474.20

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Solution

The fourth proportional to 11,778.98, 16,255.42 and 6,474.20 is: 8,934.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,778.98 : 16,255.42 = 6,474.20 : x
  2. Step 2: Convert to fraction form
    11,778.98/16,255.42 = 6,474.20/x
  3. Step 3: Cross multiply
    11,778.98x = 16,255.42 × 6,474.20
  4. Step 4: Simplify right side
    11,778.98x = 105,240,840.16
  5. Step 5: Solve for x
    x = 105,240,840.16/11,778.98
  6. Step 6: Final answer
    x = 8,934.63

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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.