Home / 11,745.18-16,208.25-6,439.89

Finding the Fourth Proportional to 11,745.18, 16,208.25 and 6,439.89

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Solution

The fourth proportional to 11,745.18, 16,208.25 and 6,439.89 is: 8,886.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.18 : 16,208.25 = 6,439.89 : x
  2. Step 2: Convert to fraction form
    11,745.18/16,208.25 = 6,439.89/x
  3. Step 3: Cross multiply
    11,745.18x = 16,208.25 × 6,439.89
  4. Step 4: Simplify right side
    11,745.18x = 104,379,347.09
  5. Step 5: Solve for x
    x = 104,379,347.09/11,745.18
  6. Step 6: Final answer
    x = 8,886.99

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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.