Home / 27,658.36-38,200.41-20,138.32

Finding the Fourth Proportional to 27,658.36, 38,200.41 and 20,138.32

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Solution

The fourth proportional to 27,658.36, 38,200.41 and 20,138.32 is: 27,814.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,658.36 : 38,200.41 = 20,138.32 : x
  2. Step 2: Convert to fraction form
    27,658.36/38,200.41 = 20,138.32/x
  3. Step 3: Cross multiply
    27,658.36x = 38,200.41 × 20,138.32
  4. Step 4: Simplify right side
    27,658.36x = 769,292,128.46
  5. Step 5: Solve for x
    x = 769,292,128.46/27,658.36
  6. Step 6: Final answer
    x = 27,814.09

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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.