Home / 12,322.75-18,480.21-4,000.84

Finding the Fourth Proportional to 12,322.75, 18,480.21 and 4,000.84

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Solution

The fourth proportional to 12,322.75, 18,480.21 and 4,000.84 is: 5,999.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,322.75 : 18,480.21 = 4,000.84 : x
  2. Step 2: Convert to fraction form
    12,322.75/18,480.21 = 4,000.84/x
  3. Step 3: Cross multiply
    12,322.75x = 18,480.21 × 4,000.84
  4. Step 4: Simplify right side
    12,322.75x = 73,936,363.38
  5. Step 5: Solve for x
    x = 73,936,363.38/12,322.75
  6. Step 6: Final answer
    x = 5,999.99

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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.