Home / 18,891.08-28,326.38-12,226.68

Finding the Fourth Proportional to 18,891.08, 28,326.38 and 12,226.68

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Solution

The fourth proportional to 18,891.08, 28,326.38 and 12,226.68 is: 18,333.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.08 : 28,326.38 = 12,226.68 : x
  2. Step 2: Convert to fraction form
    18,891.08/28,326.38 = 12,226.68/x
  3. Step 3: Cross multiply
    18,891.08x = 28,326.38 × 12,226.68
  4. Step 4: Simplify right side
    18,891.08x = 346,337,583.82
  5. Step 5: Solve for x
    x = 346,337,583.82/18,891.08
  6. Step 6: Final answer
    x = 18,333.39

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1.5x scale

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.