Home / 15,906.19-21,949.55-9,190.73

Finding the Fourth Proportional to 15,906.19, 21,949.55 and 9,190.73

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Solution

The fourth proportional to 15,906.19, 21,949.55 and 9,190.73 is: 12,682.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,906.19 : 21,949.55 = 9,190.73 : x
  2. Step 2: Convert to fraction form
    15,906.19/21,949.55 = 9,190.73/x
  3. Step 3: Cross multiply
    15,906.19x = 21,949.55 × 9,190.73
  4. Step 4: Simplify right side
    15,906.19x = 201,732,431.06
  5. Step 5: Solve for x
    x = 201,732,431.06/15,906.19
  6. Step 6: Final answer
    x = 12,682.64

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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.