Home / 20,220.50-27,901.01-11,720.96

Finding the Fourth Proportional to 20,220.50, 27,901.01 and 11,720.96

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Solution

The fourth proportional to 20,220.50, 27,901.01 and 11,720.96 is: 16,173.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.50 : 27,901.01 = 11,720.96 : x
  2. Step 2: Convert to fraction form
    20,220.50/27,901.01 = 11,720.96/x
  3. Step 3: Cross multiply
    20,220.50x = 27,901.01 × 11,720.96
  4. Step 4: Simplify right side
    20,220.50x = 327,026,662.62
  5. Step 5: Solve for x
    x = 327,026,662.62/20,220.50
  6. Step 6: Final answer
    x = 16,173.03

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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.