Home / 13,785.56-20,680.25-4,423.38

Finding the Fourth Proportional to 13,785.56, 20,680.25 and 4,423.38

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Solution

The fourth proportional to 13,785.56, 20,680.25 and 4,423.38 is: 6,635.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.56 : 20,680.25 = 4,423.38 : x
  2. Step 2: Convert to fraction form
    13,785.56/20,680.25 = 4,423.38/x
  3. Step 3: Cross multiply
    13,785.56x = 20,680.25 × 4,423.38
  4. Step 4: Simplify right side
    13,785.56x = 91,476,504.58
  5. Step 5: Solve for x
    x = 91,476,504.58/13,785.56
  6. Step 6: Final answer
    x = 6,635.68

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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.