Home / 21,242.82-31,844.32-7,193.02

Finding the Fourth Proportional to 21,242.82, 31,844.32 and 7,193.02

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Solution

The fourth proportional to 21,242.82, 31,844.32 and 7,193.02 is: 10,782.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.82 : 31,844.32 = 7,193.02 : x
  2. Step 2: Convert to fraction form
    21,242.82/31,844.32 = 7,193.02/x
  3. Step 3: Cross multiply
    21,242.82x = 31,844.32 × 7,193.02
  4. Step 4: Simplify right side
    21,242.82x = 229,056,830.65
  5. Step 5: Solve for x
    x = 229,056,830.65/21,242.82
  6. Step 6: Final answer
    x = 10,782.79

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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.