Home / 18,986.32-28,465.80-11,589.04

Finding the Fourth Proportional to 18,986.32, 28,465.80 and 11,589.04

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Solution

The fourth proportional to 18,986.32, 28,465.80 and 11,589.04 is: 17,375.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,986.32 : 28,465.80 = 11,589.04 : x
  2. Step 2: Convert to fraction form
    18,986.32/28,465.80 = 11,589.04/x
  3. Step 3: Cross multiply
    18,986.32x = 28,465.80 × 11,589.04
  4. Step 4: Simplify right side
    18,986.32x = 329,891,294.83
  5. Step 5: Solve for x
    x = 329,891,294.83/18,986.32
  6. Step 6: Final answer
    x = 17,375.21

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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.