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Finding the Fourth Proportional to 12,778.56, 19,167.84 and 4,018.68

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Solution

The fourth proportional to 12,778.56, 19,167.84 and 4,018.68 is: 6,028.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.56 : 19,167.84 = 4,018.68 : x
  2. Step 2: Convert to fraction form
    12,778.56/19,167.84 = 4,018.68/x
  3. Step 3: Cross multiply
    12,778.56x = 19,167.84 × 4,018.68
  4. Step 4: Simplify right side
    12,778.56x = 77,029,415.25
  5. Step 5: Solve for x
    x = 77,029,415.25/12,778.56
  6. Step 6: Final answer
    x = 6,028.02

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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.