Home / 11,111.80-16,646.10-6,172.60

Finding the Fourth Proportional to 11,111.80, 16,646.10 and 6,172.60

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Solution

The fourth proportional to 11,111.80, 16,646.10 and 6,172.60 is: 9,246.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,111.80 : 16,646.10 = 6,172.60 : x
  2. Step 2: Convert to fraction form
    11,111.80/16,646.10 = 6,172.60/x
  3. Step 3: Cross multiply
    11,111.80x = 16,646.10 × 6,172.60
  4. Step 4: Simplify right side
    11,111.80x = 102,749,716.86
  5. Step 5: Solve for x
    x = 102,749,716.86/11,111.80
  6. Step 6: Final answer
    x = 9,246.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.