Home / 21,290.88-31,936.32-5,708.10

Finding the Fourth Proportional to 21,290.88, 31,936.32 and 5,708.10

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Solution

The fourth proportional to 21,290.88, 31,936.32 and 5,708.10 is: 8,562.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.88 : 31,936.32 = 5,708.10 : x
  2. Step 2: Convert to fraction form
    21,290.88/31,936.32 = 5,708.10/x
  3. Step 3: Cross multiply
    21,290.88x = 31,936.32 × 5,708.10
  4. Step 4: Simplify right side
    21,290.88x = 182,295,708.19
  5. Step 5: Solve for x
    x = 182,295,708.19/21,290.88
  6. Step 6: Final answer
    x = 8,562.15

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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.