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Finding the Fourth Proportional to 20,647.95, 30,973.97 and 6,604.45

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Solution

The fourth proportional to 20,647.95, 30,973.97 and 6,604.45 is: 9,907.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.95 : 30,973.97 = 6,604.45 : x
  2. Step 2: Convert to fraction form
    20,647.95/30,973.97 = 6,604.45/x
  3. Step 3: Cross multiply
    20,647.95x = 30,973.97 × 6,604.45
  4. Step 4: Simplify right side
    20,647.95x = 204,566,149.47
  5. Step 5: Solve for x
    x = 204,566,149.47/20,647.95
  6. Step 6: Final answer
    x = 9,907.33

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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.