Home / 11,868.96-17,787.60-4,939.68

Finding the Fourth Proportional to 11,868.96, 17,787.60 and 4,939.68

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Solution

The fourth proportional to 11,868.96, 17,787.60 and 4,939.68 is: 7,402.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,868.96 : 17,787.60 = 4,939.68 : x
  2. Step 2: Convert to fraction form
    11,868.96/17,787.60 = 4,939.68/x
  3. Step 3: Cross multiply
    11,868.96x = 17,787.60 × 4,939.68
  4. Step 4: Simplify right side
    11,868.96x = 87,865,051.97
  5. Step 5: Solve for x
    x = 87,865,051.97/11,868.96
  6. Step 6: Final answer
    x = 7,402.93

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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.