Home / 12,778.01-19,175.82-4,458.09

Finding the Fourth Proportional to 12,778.01, 19,175.82 and 4,458.09

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Solution

The fourth proportional to 12,778.01, 19,175.82 and 4,458.09 is: 6,690.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.01 : 19,175.82 = 4,458.09 : x
  2. Step 2: Convert to fraction form
    12,778.01/19,175.82 = 4,458.09/x
  3. Step 3: Cross multiply
    12,778.01x = 19,175.82 × 4,458.09
  4. Step 4: Simplify right side
    12,778.01x = 85,487,531.38
  5. Step 5: Solve for x
    x = 85,487,531.38/12,778.01
  6. Step 6: Final answer
    x = 6,690.21

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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.