Home / 18,670.44-27,981.90-9,909.48

Finding the Fourth Proportional to 18,670.44, 27,981.90 and 9,909.48

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Solution

The fourth proportional to 18,670.44, 27,981.90 and 9,909.48 is: 14,851.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.44 : 27,981.90 = 9,909.48 : x
  2. Step 2: Convert to fraction form
    18,670.44/27,981.90 = 9,909.48/x
  3. Step 3: Cross multiply
    18,670.44x = 27,981.90 × 9,909.48
  4. Step 4: Simplify right side
    18,670.44x = 277,286,078.41
  5. Step 5: Solve for x
    x = 277,286,078.41/18,670.44
  6. Step 6: Final answer
    x = 14,851.61

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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.