Home / 21,293.44-31,918.40-7,431.04

Finding the Fourth Proportional to 21,293.44, 31,918.40 and 7,431.04

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Solution

The fourth proportional to 21,293.44, 31,918.40 and 7,431.04 is: 11,138.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,293.44 : 31,918.40 = 7,431.04 : x
  2. Step 2: Convert to fraction form
    21,293.44/31,918.40 = 7,431.04/x
  3. Step 3: Cross multiply
    21,293.44x = 31,918.40 × 7,431.04
  4. Step 4: Simplify right side
    21,293.44x = 237,186,907.14
  5. Step 5: Solve for x
    x = 237,186,907.14/21,293.44
  6. Step 6: Final answer
    x = 11,138.97

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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.