Home / 12,416.45-18,625.96-3,979.99

Finding the Fourth Proportional to 12,416.45, 18,625.96 and 3,979.99

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Solution

The fourth proportional to 12,416.45, 18,625.96 and 3,979.99 is: 5,970.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,416.45 : 18,625.96 = 3,979.99 : x
  2. Step 2: Convert to fraction form
    12,416.45/18,625.96 = 3,979.99/x
  3. Step 3: Cross multiply
    12,416.45x = 18,625.96 × 3,979.99
  4. Step 4: Simplify right side
    12,416.45x = 74,131,041.41
  5. Step 5: Solve for x
    x = 74,131,041.41/12,416.45
  6. Step 6: Final answer
    x = 5,970.39

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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.