Home / 12,778.28-19,175.62-6,200.88

Finding the Fourth Proportional to 12,778.28, 19,175.62 and 6,200.88

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Solution

The fourth proportional to 12,778.28, 19,175.62 and 6,200.88 is: 9,305.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.28 : 19,175.62 = 6,200.88 : x
  2. Step 2: Convert to fraction form
    12,778.28/19,175.62 = 6,200.88/x
  3. Step 3: Cross multiply
    12,778.28x = 19,175.62 × 6,200.88
  4. Step 4: Simplify right side
    12,778.28x = 118,905,741.80
  5. Step 5: Solve for x
    x = 118,905,741.80/12,778.28
  6. Step 6: Final answer
    x = 9,305.30

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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.