Home / 13,297.95-19,949.85-3,938.70

Finding the Fourth Proportional to 13,297.95, 19,949.85 and 3,938.70

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Solution

The fourth proportional to 13,297.95, 19,949.85 and 3,938.70 is: 5,908.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297.95 : 19,949.85 = 3,938.70 : x
  2. Step 2: Convert to fraction form
    13,297.95/19,949.85 = 3,938.70/x
  3. Step 3: Cross multiply
    13,297.95x = 19,949.85 × 3,938.70
  4. Step 4: Simplify right side
    13,297.95x = 78,576,474.20
  5. Step 5: Solve for x
    x = 78,576,474.20/13,297.95
  6. Step 6: Final answer
    x = 5,908.92

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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.