Home / 13,891.12-19,172.22-7,843.20

Finding the Fourth Proportional to 13,891.12, 19,172.22 and 7,843.20

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Solution

The fourth proportional to 13,891.12, 19,172.22 and 7,843.20 is: 10,825.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.12 : 19,172.22 = 7,843.20 : x
  2. Step 2: Convert to fraction form
    13,891.12/19,172.22 = 7,843.20/x
  3. Step 3: Cross multiply
    13,891.12x = 19,172.22 × 7,843.20
  4. Step 4: Simplify right side
    13,891.12x = 150,371,555.90
  5. Step 5: Solve for x
    x = 150,371,555.90/13,891.12
  6. Step 6: Final answer
    x = 10,825.01

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1.5x scale

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.