Home / 13,813.38-20,720.07-4,579.38

Finding the Fourth Proportional to 13,813.38, 20,720.07 and 4,579.38

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Solution

The fourth proportional to 13,813.38, 20,720.07 and 4,579.38 is: 6,869.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.38 : 20,720.07 = 4,579.38 : x
  2. Step 2: Convert to fraction form
    13,813.38/20,720.07 = 4,579.38/x
  3. Step 3: Cross multiply
    13,813.38x = 20,720.07 × 4,579.38
  4. Step 4: Simplify right side
    13,813.38x = 94,885,074.16
  5. Step 5: Solve for x
    x = 94,885,074.16/13,813.38
  6. Step 6: Final answer
    x = 6,869.07

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1.5x scale

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.