Home / 12,319.75-18,482.55-3,999.79

Finding the Fourth Proportional to 12,319.75, 18,482.55 and 3,999.79

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Solution

The fourth proportional to 12,319.75, 18,482.55 and 3,999.79 is: 6,000.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.75 : 18,482.55 = 3,999.79 : x
  2. Step 2: Convert to fraction form
    12,319.75/18,482.55 = 3,999.79/x
  3. Step 3: Cross multiply
    12,319.75x = 18,482.55 × 3,999.79
  4. Step 4: Simplify right side
    12,319.75x = 73,926,318.66
  5. Step 5: Solve for x
    x = 73,926,318.66/12,319.75
  6. Step 6: Final answer
    x = 6,000.63

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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.