Home / 20,245.40-27,926.94-12,173.43

Finding the Fourth Proportional to 20,245.40, 27,926.94 and 12,173.43

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Solution

The fourth proportional to 20,245.40, 27,926.94 and 12,173.43 is: 16,792.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.40 : 27,926.94 = 12,173.43 : x
  2. Step 2: Convert to fraction form
    20,245.40/27,926.94 = 12,173.43/x
  3. Step 3: Cross multiply
    20,245.40x = 27,926.94 × 12,173.43
  4. Step 4: Simplify right side
    20,245.40x = 339,966,649.20
  5. Step 5: Solve for x
    x = 339,966,649.20/20,245.40
  6. Step 6: Final answer
    x = 16,792.30

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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.