Home / 28,400.36-39,198.34-18,840.84

Finding the Fourth Proportional to 28,400.36, 39,198.34 and 18,840.84

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Solution

The fourth proportional to 28,400.36, 39,198.34 and 18,840.84 is: 26,004.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,400.36 : 39,198.34 = 18,840.84 : x
  2. Step 2: Convert to fraction form
    28,400.36/39,198.34 = 18,840.84/x
  3. Step 3: Cross multiply
    28,400.36x = 39,198.34 × 18,840.84
  4. Step 4: Simplify right side
    28,400.36x = 738,529,652.21
  5. Step 5: Solve for x
    x = 738,529,652.21/28,400.36
  6. Step 6: Final answer
    x = 26,004.24

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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.