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Finding the Fourth Proportional to 20,245.54, 30,368.49 and 7,097.89

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Solution

The fourth proportional to 20,245.54, 30,368.49 and 7,097.89 is: 10,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.54 : 30,368.49 = 7,097.89 : x
  2. Step 2: Convert to fraction form
    20,245.54/30,368.49 = 7,097.89/x
  3. Step 3: Cross multiply
    20,245.54x = 30,368.49 × 7,097.89
  4. Step 4: Simplify right side
    20,245.54x = 215,552,201.49
  5. Step 5: Solve for x
    x = 215,552,201.49/20,245.54
  6. Step 6: Final answer
    x = 10,646.90

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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.