Home / 20,623.97-28,459.51-12,126.44

Finding the Fourth Proportional to 20,623.97, 28,459.51 and 12,126.44

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Solution

The fourth proportional to 20,623.97, 28,459.51 and 12,126.44 is: 16,733.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.97 : 28,459.51 = 12,126.44 : x
  2. Step 2: Convert to fraction form
    20,623.97/28,459.51 = 12,126.44/x
  3. Step 3: Cross multiply
    20,623.97x = 28,459.51 × 12,126.44
  4. Step 4: Simplify right side
    20,623.97x = 345,112,540.44
  5. Step 5: Solve for x
    x = 345,112,540.44/20,623.97
  6. Step 6: Final answer
    x = 16,733.56

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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.