Home / 12,943.85-19,418.81-4,178.43

Finding the Fourth Proportional to 12,943.85, 19,418.81 and 4,178.43

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Solution

The fourth proportional to 12,943.85, 19,418.81 and 4,178.43 is: 6,268.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.85 : 19,418.81 = 4,178.43 : x
  2. Step 2: Convert to fraction form
    12,943.85/19,418.81 = 4,178.43/x
  3. Step 3: Cross multiply
    12,943.85x = 19,418.81 × 4,178.43
  4. Step 4: Simplify right side
    12,943.85x = 81,140,117.38
  5. Step 5: Solve for x
    x = 81,140,117.38/12,943.85
  6. Step 6: Final answer
    x = 6,268.63

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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.