Home / 20,674.36-28,533.34-20,111.43

Finding the Fourth Proportional to 20,674.36, 28,533.34 and 20,111.43

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Solution

The fourth proportional to 20,674.36, 28,533.34 and 20,111.43 is: 27,756.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.36 : 28,533.34 = 20,111.43 : x
  2. Step 2: Convert to fraction form
    20,674.36/28,533.34 = 20,111.43/x
  3. Step 3: Cross multiply
    20,674.36x = 28,533.34 × 20,111.43
  4. Step 4: Simplify right side
    20,674.36x = 573,846,169.52
  5. Step 5: Solve for x
    x = 573,846,169.52/20,674.36
  6. Step 6: Final answer
    x = 27,756.42

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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.