Home / 11,745.15-16,208.19-6,439.95

Finding the Fourth Proportional to 11,745.15, 16,208.19 and 6,439.95

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Solution

The fourth proportional to 11,745.15, 16,208.19 and 6,439.95 is: 8,887.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.15 : 16,208.19 = 6,439.95 : x
  2. Step 2: Convert to fraction form
    11,745.15/16,208.19 = 6,439.95/x
  3. Step 3: Cross multiply
    11,745.15x = 16,208.19 × 6,439.95
  4. Step 4: Simplify right side
    11,745.15x = 104,379,933.19
  5. Step 5: Solve for x
    x = 104,379,933.19/11,745.15
  6. Step 6: Final answer
    x = 8,887.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.