Home / 20,185.36-30,239.94-10,330.88

Finding the Fourth Proportional to 20,185.36, 30,239.94 and 10,330.88

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Solution

The fourth proportional to 20,185.36, 30,239.94 and 10,330.88 is: 15,476.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.36 : 30,239.94 = 10,330.88 : x
  2. Step 2: Convert to fraction form
    20,185.36/30,239.94 = 10,330.88/x
  3. Step 3: Cross multiply
    20,185.36x = 30,239.94 × 10,330.88
  4. Step 4: Simplify right side
    20,185.36x = 312,405,191.35
  5. Step 5: Solve for x
    x = 312,405,191.35/20,185.36
  6. Step 6: Final answer
    x = 15,476.82

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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.