Home / 18,336.12-27,518-13,418.44

Finding the Fourth Proportional to 18,336.12, 27,518 and 13,418.44

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Solution

The fourth proportional to 18,336.12, 27,518 and 13,418.44 is: 20,137.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,336.12 : 27,518 = 13,418.44 : x
  2. Step 2: Convert to fraction form
    18,336.12/27,518 = 13,418.44/x
  3. Step 3: Cross multiply
    18,336.12x = 27,518 × 13,418.44
  4. Step 4: Simplify right side
    18,336.12x = 369,248,631.92
  5. Step 5: Solve for x
    x = 369,248,631.92/18,336.12
  6. Step 6: Final answer
    x = 20,137.77

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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.