Home / 12,391.58-18,587.46-3,157.58

Finding the Fourth Proportional to 12,391.58, 18,587.46 and 3,157.58

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Solution

The fourth proportional to 12,391.58, 18,587.46 and 3,157.58 is: 4,736.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.58 : 18,587.46 = 3,157.58 : x
  2. Step 2: Convert to fraction form
    12,391.58/18,587.46 = 3,157.58/x
  3. Step 3: Cross multiply
    12,391.58x = 18,587.46 × 3,157.58
  4. Step 4: Simplify right side
    12,391.58x = 58,691,391.95
  5. Step 5: Solve for x
    x = 58,691,391.95/12,391.58
  6. Step 6: Final answer
    x = 4,736.39

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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.