Home / 21,080.39-31,601.07-7,923.83

Finding the Fourth Proportional to 21,080.39, 31,601.07 and 7,923.83

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Solution

The fourth proportional to 21,080.39, 31,601.07 and 7,923.83 is: 11,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,080.39 : 31,601.07 = 7,923.83 : x
  2. Step 2: Convert to fraction form
    21,080.39/31,601.07 = 7,923.83/x
  3. Step 3: Cross multiply
    21,080.39x = 31,601.07 × 7,923.83
  4. Step 4: Simplify right side
    21,080.39x = 250,401,348.49
  5. Step 5: Solve for x
    x = 250,401,348.49/21,080.39
  6. Step 6: Final answer
    x = 11,878.40

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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.