Home / 20,568.88-30,865.60-18,895.80

Finding the Fourth Proportional to 20,568.88, 30,865.60 and 18,895.80

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Solution

The fourth proportional to 20,568.88, 30,865.60 and 18,895.80 is: 28,354.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568.88 : 30,865.60 = 18,895.80 : x
  2. Step 2: Convert to fraction form
    20,568.88/30,865.60 = 18,895.80/x
  3. Step 3: Cross multiply
    20,568.88x = 30,865.60 × 18,895.80
  4. Step 4: Simplify right side
    20,568.88x = 583,230,204.48
  5. Step 5: Solve for x
    x = 583,230,204.48/20,568.88
  6. Step 6: Final answer
    x = 28,354.98

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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.