Home / 12,806.45-19,209.00-4,912.75

Finding the Fourth Proportional to 12,806.45, 19,209.00 and 4,912.75

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Solution

The fourth proportional to 12,806.45, 19,209.00 and 4,912.75 is: 7,368.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,806.45 : 19,209.00 = 4,912.75 : x
  2. Step 2: Convert to fraction form
    12,806.45/19,209.00 = 4,912.75/x
  3. Step 3: Cross multiply
    12,806.45x = 19,209.00 × 4,912.75
  4. Step 4: Simplify right side
    12,806.45x = 94,369,029.55
  5. Step 5: Solve for x
    x = 94,369,029.55/12,806.45
  6. Step 6: Final answer
    x = 7,368.86

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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.