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Finding the Fourth Proportional to 12,873.94, 19,299.93 and 12,261.58

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Solution

The fourth proportional to 12,873.94, 19,299.93 and 12,261.58 is: 18,381.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,873.94 : 19,299.93 = 12,261.58 : x
  2. Step 2: Convert to fraction form
    12,873.94/19,299.93 = 12,261.58/x
  3. Step 3: Cross multiply
    12,873.94x = 19,299.93 × 12,261.58
  4. Step 4: Simplify right side
    12,873.94x = 236,647,635.69
  5. Step 5: Solve for x
    x = 236,647,635.69/12,873.94
  6. Step 6: Final answer
    x = 18,381.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.