Home / 13,186.71-19,787.86-4,872.60

Finding the Fourth Proportional to 13,186.71, 19,787.86 and 4,872.60

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Solution

The fourth proportional to 13,186.71, 19,787.86 and 4,872.60 is: 7,311.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.71 : 19,787.86 = 4,872.60 : x
  2. Step 2: Convert to fraction form
    13,186.71/19,787.86 = 4,872.60/x
  3. Step 3: Cross multiply
    13,186.71x = 19,787.86 × 4,872.60
  4. Step 4: Simplify right side
    13,186.71x = 96,418,326.64
  5. Step 5: Solve for x
    x = 96,418,326.64/13,186.71
  6. Step 6: Final answer
    x = 7,311.78

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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.