Home / 13,268.91-19,903.43-12,603.78

Finding the Fourth Proportional to 13,268.91, 19,903.43 and 12,603.78

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Solution

The fourth proportional to 13,268.91, 19,903.43 and 12,603.78 is: 18,905.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,268.91 : 19,903.43 = 12,603.78 : x
  2. Step 2: Convert to fraction form
    13,268.91/19,903.43 = 12,603.78/x
  3. Step 3: Cross multiply
    13,268.91x = 19,903.43 × 12,603.78
  4. Step 4: Simplify right side
    13,268.91x = 250,858,452.97
  5. Step 5: Solve for x
    x = 250,858,452.97/13,268.91
  6. Step 6: Final answer
    x = 18,905.73

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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.