Home / 11,745.16-16,208.31-6,439.86

Finding the Fourth Proportional to 11,745.16, 16,208.31 and 6,439.86

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Solution

The fourth proportional to 11,745.16, 16,208.31 and 6,439.86 is: 8,887.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.16 : 16,208.31 = 6,439.86 : x
  2. Step 2: Convert to fraction form
    11,745.16/16,208.31 = 6,439.86/x
  3. Step 3: Cross multiply
    11,745.16x = 16,208.31 × 6,439.86
  4. Step 4: Simplify right side
    11,745.16x = 104,379,247.24
  5. Step 5: Solve for x
    x = 104,379,247.24/11,745.16
  6. Step 6: Final answer
    x = 8,887.00

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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.