Home / 11,745.06-16,209.20-6,440.90

Finding the Fourth Proportional to 11,745.06, 16,209.20 and 6,440.90

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Solution

The fourth proportional to 11,745.06, 16,209.20 and 6,440.90 is: 8,889.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.06 : 16,209.20 = 6,440.90 : x
  2. Step 2: Convert to fraction form
    11,745.06/16,209.20 = 6,440.90/x
  3. Step 3: Cross multiply
    11,745.06x = 16,209.20 × 6,440.90
  4. Step 4: Simplify right side
    11,745.06x = 104,401,836.28
  5. Step 5: Solve for x
    x = 104,401,836.28/11,745.06
  6. Step 6: Final answer
    x = 8,889.00

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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.