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Finding the Fourth Proportional to 14,361.78, 19,818.87 and 8,074.56

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Solution

The fourth proportional to 14,361.78, 19,818.87 and 8,074.56 is: 11,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,361.78 : 19,818.87 = 8,074.56 : x
  2. Step 2: Convert to fraction form
    14,361.78/19,818.87 = 8,074.56/x
  3. Step 3: Cross multiply
    14,361.78x = 19,818.87 × 8,074.56
  4. Step 4: Simplify right side
    14,361.78x = 160,028,654.95
  5. Step 5: Solve for x
    x = 160,028,654.95/14,361.78
  6. Step 6: Final answer
    x = 11,142.68

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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.