Home / 13,661.79-20,490.85-4,299.54

Finding the Fourth Proportional to 13,661.79, 20,490.85 and 4,299.54

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Solution

The fourth proportional to 13,661.79, 20,490.85 and 4,299.54 is: 6,448.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.79 : 20,490.85 = 4,299.54 : x
  2. Step 2: Convert to fraction form
    13,661.79/20,490.85 = 4,299.54/x
  3. Step 3: Cross multiply
    13,661.79x = 20,490.85 × 4,299.54
  4. Step 4: Simplify right side
    13,661.79x = 88,101,229.21
  5. Step 5: Solve for x
    x = 88,101,229.21/13,661.79
  6. Step 6: Final answer
    x = 6,448.73

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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.