Home / 11,181.40-16,772.10-3,390.21

Finding the Fourth Proportional to 11,181.40, 16,772.10 and 3,390.21

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Solution

The fourth proportional to 11,181.40, 16,772.10 and 3,390.21 is: 5,085.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,181.40 : 16,772.10 = 3,390.21 : x
  2. Step 2: Convert to fraction form
    11,181.40/16,772.10 = 3,390.21/x
  3. Step 3: Cross multiply
    11,181.40x = 16,772.10 × 3,390.21
  4. Step 4: Simplify right side
    11,181.40x = 56,860,941.14
  5. Step 5: Solve for x
    x = 56,860,941.14/11,181.40
  6. Step 6: Final answer
    x = 5,085.32

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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.