Home / 30,198.09-45,297.56-9,138.30

Finding the Fourth Proportional to 30,198.09, 45,297.56 and 9,138.30

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Solution

The fourth proportional to 30,198.09, 45,297.56 and 9,138.30 is: 13,707.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,198.09 : 45,297.56 = 9,138.30 : x
  2. Step 2: Convert to fraction form
    30,198.09/45,297.56 = 9,138.30/x
  3. Step 3: Cross multiply
    30,198.09x = 45,297.56 × 9,138.30
  4. Step 4: Simplify right side
    30,198.09x = 413,942,692.55
  5. Step 5: Solve for x
    x = 413,942,692.55/30,198.09
  6. Step 6: Final answer
    x = 13,707.58

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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.