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Finding the Fourth Proportional to 20,513.98, 30,774.08 and 7,369.44

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Solution

The fourth proportional to 20,513.98, 30,774.08 and 7,369.44 is: 11,055.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.98 : 30,774.08 = 7,369.44 : x
  2. Step 2: Convert to fraction form
    20,513.98/30,774.08 = 7,369.44/x
  3. Step 3: Cross multiply
    20,513.98x = 30,774.08 × 7,369.44
  4. Step 4: Simplify right side
    20,513.98x = 226,787,736.12
  5. Step 5: Solve for x
    x = 226,787,736.12/20,513.98
  6. Step 6: Final answer
    x = 11,055.28

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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.