Home / 20,143.89-27,806.05-17,299.84

Finding the Fourth Proportional to 20,143.89, 27,806.05 and 17,299.84

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Solution

The fourth proportional to 20,143.89, 27,806.05 and 17,299.84 is: 23,880.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.89 : 27,806.05 = 17,299.84 : x
  2. Step 2: Convert to fraction form
    20,143.89/27,806.05 = 17,299.84/x
  3. Step 3: Cross multiply
    20,143.89x = 27,806.05 × 17,299.84
  4. Step 4: Simplify right side
    20,143.89x = 481,040,216.03
  5. Step 5: Solve for x
    x = 481,040,216.03/20,143.89
  6. Step 6: Final answer
    x = 23,880.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.