Home / 18,932.08-28,398.12-11,992

Finding the Fourth Proportional to 18,932.08, 28,398.12 and 11,992

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Solution

The fourth proportional to 18,932.08, 28,398.12 and 11,992 is: 17,988.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,932.08 : 28,398.12 = 11,992 : x
  2. Step 2: Convert to fraction form
    18,932.08/28,398.12 = 11,992/x
  3. Step 3: Cross multiply
    18,932.08x = 28,398.12 × 11,992
  4. Step 4: Simplify right side
    18,932.08x = 340,550,255.04
  5. Step 5: Solve for x
    x = 340,550,255.04/18,932.08
  6. Step 6: Final answer
    x = 17,988.00

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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.