Home / 12,012.92-18,021.20-7,084.88

Finding the Fourth Proportional to 12,012.92, 18,021.20 and 7,084.88

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Solution

The fourth proportional to 12,012.92, 18,021.20 and 7,084.88 is: 10,628.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,012.92 : 18,021.20 = 7,084.88 : x
  2. Step 2: Convert to fraction form
    12,012.92/18,021.20 = 7,084.88/x
  3. Step 3: Cross multiply
    12,012.92x = 18,021.20 × 7,084.88
  4. Step 4: Simplify right side
    12,012.92x = 127,678,039.46
  5. Step 5: Solve for x
    x = 127,678,039.46/12,012.92
  6. Step 6: Final answer
    x = 10,628.39

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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.