Home / 12,160.12-18,240.99-3,840.48

Finding the Fourth Proportional to 12,160.12, 18,240.99 and 3,840.48

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Solution

The fourth proportional to 12,160.12, 18,240.99 and 3,840.48 is: 5,760.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.12 : 18,240.99 = 3,840.48 : x
  2. Step 2: Convert to fraction form
    12,160.12/18,240.99 = 3,840.48/x
  3. Step 3: Cross multiply
    12,160.12x = 18,240.99 × 3,840.48
  4. Step 4: Simplify right side
    12,160.12x = 70,054,157.28
  5. Step 5: Solve for x
    x = 70,054,157.28/12,160.12
  6. Step 6: Final answer
    x = 5,760.98

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Similar ratio
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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.