Home / 15,361.97-21,195.27-8,647.20

Finding the Fourth Proportional to 15,361.97, 21,195.27 and 8,647.20

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Solution

The fourth proportional to 15,361.97, 21,195.27 and 8,647.20 is: 11,930.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,361.97 : 21,195.27 = 8,647.20 : x
  2. Step 2: Convert to fraction form
    15,361.97/21,195.27 = 8,647.20/x
  3. Step 3: Cross multiply
    15,361.97x = 21,195.27 × 8,647.20
  4. Step 4: Simplify right side
    15,361.97x = 183,279,738.74
  5. Step 5: Solve for x
    x = 183,279,738.74/15,361.97
  6. Step 6: Final answer
    x = 11,930.75

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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.