Home / 20,997.84-28,977.36-11,566.41

Finding the Fourth Proportional to 20,997.84, 28,977.36 and 11,566.41

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Solution

The fourth proportional to 20,997.84, 28,977.36 and 11,566.41 is: 15,961.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.84 : 28,977.36 = 11,566.41 : x
  2. Step 2: Convert to fraction form
    20,997.84/28,977.36 = 11,566.41/x
  3. Step 3: Cross multiply
    20,997.84x = 28,977.36 × 11,566.41
  4. Step 4: Simplify right side
    20,997.84x = 335,164,026.48
  5. Step 5: Solve for x
    x = 335,164,026.48/20,997.84
  6. Step 6: Final answer
    x = 15,961.83

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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.