Home / 13,813.75-20,720.69-4,579.75

Finding the Fourth Proportional to 13,813.75, 20,720.69 and 4,579.75

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Solution

The fourth proportional to 13,813.75, 20,720.69 and 4,579.75 is: 6,869.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.75 : 20,720.69 = 4,579.75 : x
  2. Step 2: Convert to fraction form
    13,813.75/20,720.69 = 4,579.75/x
  3. Step 3: Cross multiply
    13,813.75x = 20,720.69 × 4,579.75
  4. Step 4: Simplify right side
    13,813.75x = 94,895,580.03
  5. Step 5: Solve for x
    x = 94,895,580.03/13,813.75
  6. Step 6: Final answer
    x = 6,869.65

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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.