Home / 12,120.93-18,178.16-3,356.33

Finding the Fourth Proportional to 12,120.93, 18,178.16 and 3,356.33

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Solution

The fourth proportional to 12,120.93, 18,178.16 and 3,356.33 is: 5,033.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.93 : 18,178.16 = 3,356.33 : x
  2. Step 2: Convert to fraction form
    12,120.93/18,178.16 = 3,356.33/x
  3. Step 3: Cross multiply
    12,120.93x = 18,178.16 × 3,356.33
  4. Step 4: Simplify right side
    12,120.93x = 61,011,796.08
  5. Step 5: Solve for x
    x = 61,011,796.08/12,120.93
  6. Step 6: Final answer
    x = 5,033.59

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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.