Home / 11,745.40-16,209.42-6,440.21

Finding the Fourth Proportional to 11,745.40, 16,209.42 and 6,440.21

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Solution

The fourth proportional to 11,745.40, 16,209.42 and 6,440.21 is: 8,887.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.40 : 16,209.42 = 6,440.21 : x
  2. Step 2: Convert to fraction form
    11,745.40/16,209.42 = 6,440.21/x
  3. Step 3: Cross multiply
    11,745.40x = 16,209.42 × 6,440.21
  4. Step 4: Simplify right side
    11,745.40x = 104,392,096.03
  5. Step 5: Solve for x
    x = 104,392,096.03/11,745.40
  6. Step 6: Final answer
    x = 8,887.92

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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.