Home / 14,287.42-19,716.60-7,999.78

Finding the Fourth Proportional to 14,287.42, 19,716.60 and 7,999.78

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Solution

The fourth proportional to 14,287.42, 19,716.60 and 7,999.78 is: 11,039.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,287.42 : 19,716.60 = 7,999.78 : x
  2. Step 2: Convert to fraction form
    14,287.42/19,716.60 = 7,999.78/x
  3. Step 3: Cross multiply
    14,287.42x = 19,716.60 × 7,999.78
  4. Step 4: Simplify right side
    14,287.42x = 157,728,462.35
  5. Step 5: Solve for x
    x = 157,728,462.35/14,287.42
  6. Step 6: Final answer
    x = 11,039.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.