Home / 20,605.10-30,907.67-7,454.39

Finding the Fourth Proportional to 20,605.10, 30,907.67 and 7,454.39

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Solution

The fourth proportional to 20,605.10, 30,907.67 and 7,454.39 is: 11,181.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.10 : 30,907.67 = 7,454.39 : x
  2. Step 2: Convert to fraction form
    20,605.10/30,907.67 = 7,454.39/x
  3. Step 3: Cross multiply
    20,605.10x = 30,907.67 × 7,454.39
  4. Step 4: Simplify right side
    20,605.10x = 230,397,634.36
  5. Step 5: Solve for x
    x = 230,397,634.36/20,605.10
  6. Step 6: Final answer
    x = 11,181.59

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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.