Home / 12,212.79-18,319.88-4,716.38

Finding the Fourth Proportional to 12,212.79, 18,319.88 and 4,716.38

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Solution

The fourth proportional to 12,212.79, 18,319.88 and 4,716.38 is: 7,074.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.79 : 18,319.88 = 4,716.38 : x
  2. Step 2: Convert to fraction form
    12,212.79/18,319.88 = 4,716.38/x
  3. Step 3: Cross multiply
    12,212.79x = 18,319.88 × 4,716.38
  4. Step 4: Simplify right side
    12,212.79x = 86,403,573.23
  5. Step 5: Solve for x
    x = 86,403,573.23/12,212.79
  6. Step 6: Final answer
    x = 7,074.85

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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.