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Finding the Fourth Proportional to 15,361.46, 21,198.84 and 8,647.46

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Solution

The fourth proportional to 15,361.46, 21,198.84 and 8,647.46 is: 11,933.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,361.46 : 21,198.84 = 8,647.46 : x
  2. Step 2: Convert to fraction form
    15,361.46/21,198.84 = 8,647.46/x
  3. Step 3: Cross multiply
    15,361.46x = 21,198.84 × 8,647.46
  4. Step 4: Simplify right side
    15,361.46x = 183,316,120.95
  5. Step 5: Solve for x
    x = 183,316,120.95/15,361.46
  6. Step 6: Final answer
    x = 11,933.51

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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.