Home / 21,072.74-31,540.52-15,523.90

Finding the Fourth Proportional to 21,072.74, 31,540.52 and 15,523.90

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Solution

The fourth proportional to 21,072.74, 31,540.52 and 15,523.90 is: 23,235.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.74 : 31,540.52 = 15,523.90 : x
  2. Step 2: Convert to fraction form
    21,072.74/31,540.52 = 15,523.90/x
  3. Step 3: Cross multiply
    21,072.74x = 31,540.52 × 15,523.90
  4. Step 4: Simplify right side
    21,072.74x = 489,631,878.43
  5. Step 5: Solve for x
    x = 489,631,878.43/21,072.74
  6. Step 6: Final answer
    x = 23,235.32

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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.