Home / 15,978.36-23,963.38-6,621

Finding the Fourth Proportional to 15,978.36, 23,963.38 and 6,621

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Solution

The fourth proportional to 15,978.36, 23,963.38 and 6,621 is: 9,929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978.36 : 23,963.38 = 6,621 : x
  2. Step 2: Convert to fraction form
    15,978.36/23,963.38 = 6,621/x
  3. Step 3: Cross multiply
    15,978.36x = 23,963.38 × 6,621
  4. Step 4: Simplify right side
    15,978.36x = 158,661,538.98
  5. Step 5: Solve for x
    x = 158,661,538.98/15,978.36
  6. Step 6: Final answer
    x = 9,929.78

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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.