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Finding the Fourth Proportional to 14,523.40, 21,785.10 and 13,794.40

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Solution

The fourth proportional to 14,523.40, 21,785.10 and 13,794.40 is: 20,691.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,523.40 : 21,785.10 = 13,794.40 : x
  2. Step 2: Convert to fraction form
    14,523.40/21,785.10 = 13,794.40/x
  3. Step 3: Cross multiply
    14,523.40x = 21,785.10 × 13,794.40
  4. Step 4: Simplify right side
    14,523.40x = 300,512,383.44
  5. Step 5: Solve for x
    x = 300,512,383.44/14,523.40
  6. Step 6: Final answer
    x = 20,691.60

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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.