Home / 12,949.66-19,412.14-4,178.41

Finding the Fourth Proportional to 12,949.66, 19,412.14 and 4,178.41

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Solution

The fourth proportional to 12,949.66, 19,412.14 and 4,178.41 is: 6,263.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,949.66 : 19,412.14 = 4,178.41 : x
  2. Step 2: Convert to fraction form
    12,949.66/19,412.14 = 4,178.41/x
  3. Step 3: Cross multiply
    12,949.66x = 19,412.14 × 4,178.41
  4. Step 4: Simplify right side
    12,949.66x = 81,111,879.90
  5. Step 5: Solve for x
    x = 81,111,879.90/12,949.66
  6. Step 6: Final answer
    x = 6,263.63

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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.