Home / 12,190.73-18,285.48-4,293.63

Finding the Fourth Proportional to 12,190.73, 18,285.48 and 4,293.63

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Solution

The fourth proportional to 12,190.73, 18,285.48 and 4,293.63 is: 6,440.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.73 : 18,285.48 = 4,293.63 : x
  2. Step 2: Convert to fraction form
    12,190.73/18,285.48 = 4,293.63/x
  3. Step 3: Cross multiply
    12,190.73x = 18,285.48 × 4,293.63
  4. Step 4: Simplify right side
    12,190.73x = 78,511,085.49
  5. Step 5: Solve for x
    x = 78,511,085.49/12,190.73
  6. Step 6: Final answer
    x = 6,440.23

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Double scale
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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.