Home / 20,440.58-28,207.09-11,943.49

Finding the Fourth Proportional to 20,440.58, 28,207.09 and 11,943.49

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Solution

The fourth proportional to 20,440.58, 28,207.09 and 11,943.49 is: 16,481.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.58 : 28,207.09 = 11,943.49 : x
  2. Step 2: Convert to fraction form
    20,440.58/28,207.09 = 11,943.49/x
  3. Step 3: Cross multiply
    20,440.58x = 28,207.09 × 11,943.49
  4. Step 4: Simplify right side
    20,440.58x = 336,890,996.97
  5. Step 5: Solve for x
    x = 336,890,996.97/20,440.58
  6. Step 6: Final answer
    x = 16,481.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.