Home / 11,245.39-16,868.90-4,319.89

Finding the Fourth Proportional to 11,245.39, 16,868.90 and 4,319.89

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Solution

The fourth proportional to 11,245.39, 16,868.90 and 4,319.89 is: 6,480.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,245.39 : 16,868.90 = 4,319.89 : x
  2. Step 2: Convert to fraction form
    11,245.39/16,868.90 = 4,319.89/x
  3. Step 3: Cross multiply
    11,245.39x = 16,868.90 × 4,319.89
  4. Step 4: Simplify right side
    11,245.39x = 72,871,770.82
  5. Step 5: Solve for x
    x = 72,871,770.82/11,245.39
  6. Step 6: Final answer
    x = 6,480.15

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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.