Home / 12,015.25-18,023.37-4,123.19

Finding the Fourth Proportional to 12,015.25, 18,023.37 and 4,123.19

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Solution

The fourth proportional to 12,015.25, 18,023.37 and 4,123.19 is: 6,184.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.25 : 18,023.37 = 4,123.19 : x
  2. Step 2: Convert to fraction form
    12,015.25/18,023.37 = 4,123.19/x
  3. Step 3: Cross multiply
    12,015.25x = 18,023.37 × 4,123.19
  4. Step 4: Simplify right side
    12,015.25x = 74,313,778.95
  5. Step 5: Solve for x
    x = 74,313,778.95/12,015.25
  6. Step 6: Final answer
    x = 6,184.95

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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.