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Finding the Fourth Proportional to 14,361.46, 19,817.52 and 7,987.78

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Solution

The fourth proportional to 14,361.46, 19,817.52 and 7,987.78 is: 11,022.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,361.46 : 19,817.52 = 7,987.78 : x
  2. Step 2: Convert to fraction form
    14,361.46/19,817.52 = 7,987.78/x
  3. Step 3: Cross multiply
    14,361.46x = 19,817.52 × 7,987.78
  4. Step 4: Simplify right side
    14,361.46x = 158,297,989.91
  5. Step 5: Solve for x
    x = 158,297,989.91/14,361.46
  6. Step 6: Final answer
    x = 11,022.42

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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.