Home / 12,450.70-18,639.60-8,295.40

Finding the Fourth Proportional to 12,450.70, 18,639.60 and 8,295.40

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Solution

The fourth proportional to 12,450.70, 18,639.60 and 8,295.40 is: 12,418.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,450.70 : 18,639.60 = 8,295.40 : x
  2. Step 2: Convert to fraction form
    12,450.70/18,639.60 = 8,295.40/x
  3. Step 3: Cross multiply
    12,450.70x = 18,639.60 × 8,295.40
  4. Step 4: Simplify right side
    12,450.70x = 154,622,937.84
  5. Step 5: Solve for x
    x = 154,622,937.84/12,450.70
  6. Step 6: Final answer
    x = 12,418.81

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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.