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Finding the Fourth Proportional to 13,668.16, 20,500.80 and 4,902.16

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Solution

The fourth proportional to 13,668.16, 20,500.80 and 4,902.16 is: 7,352.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668.16 : 20,500.80 = 4,902.16 : x
  2. Step 2: Convert to fraction form
    13,668.16/20,500.80 = 4,902.16/x
  3. Step 3: Cross multiply
    13,668.16x = 20,500.80 × 4,902.16
  4. Step 4: Simplify right side
    13,668.16x = 100,498,201.73
  5. Step 5: Solve for x
    x = 100,498,201.73/13,668.16
  6. Step 6: Final answer
    x = 7,352.72

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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.