Home / 20,694.93-31,018.09-9,578.15

Finding the Fourth Proportional to 20,694.93, 31,018.09 and 9,578.15

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Solution

The fourth proportional to 20,694.93, 31,018.09 and 9,578.15 is: 14,355.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.93 : 31,018.09 = 9,578.15 : x
  2. Step 2: Convert to fraction form
    20,694.93/31,018.09 = 9,578.15/x
  3. Step 3: Cross multiply
    20,694.93x = 31,018.09 × 9,578.15
  4. Step 4: Simplify right side
    20,694.93x = 297,095,763.64
  5. Step 5: Solve for x
    x = 297,095,763.64/20,694.93
  6. Step 6: Final answer
    x = 14,355.97

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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.