Home / 11,145.12-16,718.05-4,126.90

Finding the Fourth Proportional to 11,145.12, 16,718.05 and 4,126.90

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Solution

The fourth proportional to 11,145.12, 16,718.05 and 4,126.90 is: 6,190.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.12 : 16,718.05 = 4,126.90 : x
  2. Step 2: Convert to fraction form
    11,145.12/16,718.05 = 4,126.90/x
  3. Step 3: Cross multiply
    11,145.12x = 16,718.05 × 4,126.90
  4. Step 4: Simplify right side
    11,145.12x = 68,993,762.57
  5. Step 5: Solve for x
    x = 68,993,762.57/11,145.12
  6. Step 6: Final answer
    x = 6,190.49

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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.