Home / 20,997.49-28,976.54-11,566.05

Finding the Fourth Proportional to 20,997.49, 28,976.54 and 11,566.05

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Solution

The fourth proportional to 20,997.49, 28,976.54 and 11,566.05 is: 15,961.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.49 : 28,976.54 = 11,566.05 : x
  2. Step 2: Convert to fraction form
    20,997.49/28,976.54 = 11,566.05/x
  3. Step 3: Cross multiply
    20,997.49x = 28,976.54 × 11,566.05
  4. Step 4: Simplify right side
    20,997.49x = 335,144,052.64
  5. Step 5: Solve for x
    x = 335,144,052.64/20,997.49
  6. Step 6: Final answer
    x = 15,961.15

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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.