Home / 13,318.31-19,972.26-4,993.78

Finding the Fourth Proportional to 13,318.31, 19,972.26 and 4,993.78

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Solution

The fourth proportional to 13,318.31, 19,972.26 and 4,993.78 is: 7,488.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.31 : 19,972.26 = 4,993.78 : x
  2. Step 2: Convert to fraction form
    13,318.31/19,972.26 = 4,993.78/x
  3. Step 3: Cross multiply
    13,318.31x = 19,972.26 × 4,993.78
  4. Step 4: Simplify right side
    13,318.31x = 99,737,072.54
  5. Step 5: Solve for x
    x = 99,737,072.54/13,318.31
  6. Step 6: Final answer
    x = 7,488.72

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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.