Home / 35,245.13-48,633.78-20,138.77

Finding the Fourth Proportional to 35,245.13, 48,633.78 and 20,138.77

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Solution

The fourth proportional to 35,245.13, 48,633.78 and 20,138.77 is: 27,788.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,245.13 : 48,633.78 = 20,138.77 : x
  2. Step 2: Convert to fraction form
    35,245.13/48,633.78 = 20,138.77/x
  3. Step 3: Cross multiply
    35,245.13x = 48,633.78 × 20,138.77
  4. Step 4: Simplify right side
    35,245.13x = 979,424,570.44
  5. Step 5: Solve for x
    x = 979,424,570.44/35,245.13
  6. Step 6: Final answer
    x = 27,788.93

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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.