Home / 12,148.52-18,222.80-3,383.20

Finding the Fourth Proportional to 12,148.52, 18,222.80 and 3,383.20

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Solution

The fourth proportional to 12,148.52, 18,222.80 and 3,383.20 is: 5,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.52 : 18,222.80 = 3,383.20 : x
  2. Step 2: Convert to fraction form
    12,148.52/18,222.80 = 3,383.20/x
  3. Step 3: Cross multiply
    12,148.52x = 18,222.80 × 3,383.20
  4. Step 4: Simplify right side
    12,148.52x = 61,651,376.96
  5. Step 5: Solve for x
    x = 61,651,376.96/12,148.52
  6. Step 6: Final answer
    x = 5,074.81

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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.