Home / 12,977.70-19,469.28-4,211.93

Finding the Fourth Proportional to 12,977.70, 19,469.28 and 4,211.93

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Solution

The fourth proportional to 12,977.70, 19,469.28 and 4,211.93 is: 6,318.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.70 : 19,469.28 = 4,211.93 : x
  2. Step 2: Convert to fraction form
    12,977.70/19,469.28 = 4,211.93/x
  3. Step 3: Cross multiply
    12,977.70x = 19,469.28 × 4,211.93
  4. Step 4: Simplify right side
    12,977.70x = 82,003,244.51
  5. Step 5: Solve for x
    x = 82,003,244.51/12,977.70
  6. Step 6: Final answer
    x = 6,318.78

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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.