Home / 18,940.45-28,379.26-11,522.47

Finding the Fourth Proportional to 18,940.45, 28,379.26 and 11,522.47

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Solution

The fourth proportional to 18,940.45, 28,379.26 and 11,522.47 is: 17,264.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.45 : 28,379.26 = 11,522.47 : x
  2. Step 2: Convert to fraction form
    18,940.45/28,379.26 = 11,522.47/x
  3. Step 3: Cross multiply
    18,940.45x = 28,379.26 × 11,522.47
  4. Step 4: Simplify right side
    18,940.45x = 326,999,115.43
  5. Step 5: Solve for x
    x = 326,999,115.43/18,940.45
  6. Step 6: Final answer
    x = 17,264.59

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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.