Home / 12,949.86-19,428.02-4,185.66

Finding the Fourth Proportional to 12,949.86, 19,428.02 and 4,185.66

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Solution

The fourth proportional to 12,949.86, 19,428.02 and 4,185.66 is: 6,279.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,949.86 : 19,428.02 = 4,185.66 : x
  2. Step 2: Convert to fraction form
    12,949.86/19,428.02 = 4,185.66/x
  3. Step 3: Cross multiply
    12,949.86x = 19,428.02 × 4,185.66
  4. Step 4: Simplify right side
    12,949.86x = 81,319,086.19
  5. Step 5: Solve for x
    x = 81,319,086.19/12,949.86
  6. Step 6: Final answer
    x = 6,279.53

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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.