Home / 12,078.48-18,107.94-4,679.16

Finding the Fourth Proportional to 12,078.48, 18,107.94 and 4,679.16

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Solution

The fourth proportional to 12,078.48, 18,107.94 and 4,679.16 is: 7,014.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.48 : 18,107.94 = 4,679.16 : x
  2. Step 2: Convert to fraction form
    12,078.48/18,107.94 = 4,679.16/x
  3. Step 3: Cross multiply
    12,078.48x = 18,107.94 × 4,679.16
  4. Step 4: Simplify right side
    12,078.48x = 84,729,948.53
  5. Step 5: Solve for x
    x = 84,729,948.53/12,078.48
  6. Step 6: Final answer
    x = 7,014.95

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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.