Home / 20,390.49-30,546.27-11,936.52

Finding the Fourth Proportional to 20,390.49, 30,546.27 and 11,936.52

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Solution

The fourth proportional to 20,390.49, 30,546.27 and 11,936.52 is: 17,881.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390.49 : 30,546.27 = 11,936.52 : x
  2. Step 2: Convert to fraction form
    20,390.49/30,546.27 = 11,936.52/x
  3. Step 3: Cross multiply
    20,390.49x = 30,546.27 × 11,936.52
  4. Step 4: Simplify right side
    20,390.49x = 364,616,162.78
  5. Step 5: Solve for x
    x = 364,616,162.78/20,390.49
  6. Step 6: Final answer
    x = 17,881.68

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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.