Home / 35,455.35-48,919.79-20,138.49

Finding the Fourth Proportional to 35,455.35, 48,919.79 and 20,138.49

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Solution

The fourth proportional to 35,455.35, 48,919.79 and 20,138.49 is: 27,786.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,455.35 : 48,919.79 = 20,138.49 : x
  2. Step 2: Convert to fraction form
    35,455.35/48,919.79 = 20,138.49/x
  3. Step 3: Cross multiply
    35,455.35x = 48,919.79 × 20,138.49
  4. Step 4: Simplify right side
    35,455.35x = 985,170,701.72
  5. Step 5: Solve for x
    x = 985,170,701.72/35,455.35
  6. Step 6: Final answer
    x = 27,786.24

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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.