Home / 14,629.68-20,187.20-8,255.78

Finding the Fourth Proportional to 14,629.68, 20,187.20 and 8,255.78

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Solution

The fourth proportional to 14,629.68, 20,187.20 and 8,255.78 is: 11,391.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,629.68 : 20,187.20 = 8,255.78 : x
  2. Step 2: Convert to fraction form
    14,629.68/20,187.20 = 8,255.78/x
  3. Step 3: Cross multiply
    14,629.68x = 20,187.20 × 8,255.78
  4. Step 4: Simplify right side
    14,629.68x = 166,661,082.02
  5. Step 5: Solve for x
    x = 166,661,082.02/14,629.68
  6. Step 6: Final answer
    x = 11,391.98

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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.