Home / 9,919.87-13,690.01-5,943.78

Finding the Fourth Proportional to 9,919.87, 13,690.01 and 5,943.78

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Solution

The fourth proportional to 9,919.87, 13,690.01 and 5,943.78 is: 8,202.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.87 : 13,690.01 = 5,943.78 : x
  2. Step 2: Convert to fraction form
    9,919.87/13,690.01 = 5,943.78/x
  3. Step 3: Cross multiply
    9,919.87x = 13,690.01 × 5,943.78
  4. Step 4: Simplify right side
    9,919.87x = 81,370,422.50
  5. Step 5: Solve for x
    x = 81,370,422.50/9,919.87
  6. Step 6: Final answer
    x = 8,202.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.