Home / 12,912.95-19,357.11-5,507.21

Finding the Fourth Proportional to 12,912.95, 19,357.11 and 5,507.21

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Solution

The fourth proportional to 12,912.95, 19,357.11 and 5,507.21 is: 8,255.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.95 : 19,357.11 = 5,507.21 : x
  2. Step 2: Convert to fraction form
    12,912.95/19,357.11 = 5,507.21/x
  3. Step 3: Cross multiply
    12,912.95x = 19,357.11 × 5,507.21
  4. Step 4: Simplify right side
    12,912.95x = 106,603,572.98
  5. Step 5: Solve for x
    x = 106,603,572.98/12,912.95
  6. Step 6: Final answer
    x = 8,255.56

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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.