Home / 20,563.14-30,844.89-4,980.78

Finding the Fourth Proportional to 20,563.14, 30,844.89 and 4,980.78

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Solution

The fourth proportional to 20,563.14, 30,844.89 and 4,980.78 is: 7,471.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.14 : 30,844.89 = 4,980.78 : x
  2. Step 2: Convert to fraction form
    20,563.14/30,844.89 = 4,980.78/x
  3. Step 3: Cross multiply
    20,563.14x = 30,844.89 × 4,980.78
  4. Step 4: Simplify right side
    20,563.14x = 153,631,611.21
  5. Step 5: Solve for x
    x = 153,631,611.21/20,563.14
  6. Step 6: Final answer
    x = 7,471.21

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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.