Home / 20,009.26-30,039.81-12,628.54

Finding the Fourth Proportional to 20,009.26, 30,039.81 and 12,628.54

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Solution

The fourth proportional to 20,009.26, 30,039.81 and 12,628.54 is: 18,959.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.26 : 30,039.81 = 12,628.54 : x
  2. Step 2: Convert to fraction form
    20,009.26/30,039.81 = 12,628.54/x
  3. Step 3: Cross multiply
    20,009.26x = 30,039.81 × 12,628.54
  4. Step 4: Simplify right side
    20,009.26x = 379,358,942.18
  5. Step 5: Solve for x
    x = 379,358,942.18/20,009.26
  6. Step 6: Final answer
    x = 18,959.17

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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.