Home / 20,436.26-30,637.84-6,389.06

Finding the Fourth Proportional to 20,436.26, 30,637.84 and 6,389.06

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Solution

The fourth proportional to 20,436.26, 30,637.84 and 6,389.06 is: 9,578.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.26 : 30,637.84 = 6,389.06 : x
  2. Step 2: Convert to fraction form
    20,436.26/30,637.84 = 6,389.06/x
  3. Step 3: Cross multiply
    20,436.26x = 30,637.84 × 6,389.06
  4. Step 4: Simplify right side
    20,436.26x = 195,746,998.03
  5. Step 5: Solve for x
    x = 195,746,998.03/20,436.26
  6. Step 6: Final answer
    x = 9,578.42

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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.