Home / 20,531.87-30,797.80-4,949.49

Finding the Fourth Proportional to 20,531.87, 30,797.80 and 4,949.49

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Solution

The fourth proportional to 20,531.87, 30,797.80 and 4,949.49 is: 7,424.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.87 : 30,797.80 = 4,949.49 : x
  2. Step 2: Convert to fraction form
    20,531.87/30,797.80 = 4,949.49/x
  3. Step 3: Cross multiply
    20,531.87x = 30,797.80 × 4,949.49
  4. Step 4: Simplify right side
    20,531.87x = 152,433,403.12
  5. Step 5: Solve for x
    x = 152,433,403.12/20,531.87
  6. Step 6: Final answer
    x = 7,424.23

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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.