Home / 15,936.20-21,997.41-9,648.57

Finding the Fourth Proportional to 15,936.20, 21,997.41 and 9,648.57

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Solution

The fourth proportional to 15,936.20, 21,997.41 and 9,648.57 is: 13,318.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,936.20 : 21,997.41 = 9,648.57 : x
  2. Step 2: Convert to fraction form
    15,936.20/21,997.41 = 9,648.57/x
  3. Step 3: Cross multiply
    15,936.20x = 21,997.41 × 9,648.57
  4. Step 4: Simplify right side
    15,936.20x = 212,243,550.20
  5. Step 5: Solve for x
    x = 212,243,550.20/15,936.20
  6. Step 6: Final answer
    x = 13,318.33

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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.