Home / 11,745.99-16,209.45-6,440.81

Finding the Fourth Proportional to 11,745.99, 16,209.45 and 6,440.81

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Solution

The fourth proportional to 11,745.99, 16,209.45 and 6,440.81 is: 8,888.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.99 : 16,209.45 = 6,440.81 : x
  2. Step 2: Convert to fraction form
    11,745.99/16,209.45 = 6,440.81/x
  3. Step 3: Cross multiply
    11,745.99x = 16,209.45 × 6,440.81
  4. Step 4: Simplify right side
    11,745.99x = 104,401,906.61
  5. Step 5: Solve for x
    x = 104,401,906.61/11,745.99
  6. Step 6: Final answer
    x = 8,888.30

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Half scale
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Double scale
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Similar ratio
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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.