Home / 12,285.64-18,418.38-4,383.70

Finding the Fourth Proportional to 12,285.64, 18,418.38 and 4,383.70

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Solution

The fourth proportional to 12,285.64, 18,418.38 and 4,383.70 is: 6,571.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,285.64 : 18,418.38 = 4,383.70 : x
  2. Step 2: Convert to fraction form
    12,285.64/18,418.38 = 4,383.70/x
  3. Step 3: Cross multiply
    12,285.64x = 18,418.38 × 4,383.70
  4. Step 4: Simplify right side
    12,285.64x = 80,740,602.70
  5. Step 5: Solve for x
    x = 80,740,602.70/12,285.64
  6. Step 6: Final answer
    x = 6,571.95

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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.