Home / 28,480.37-39,247.40-20,507.54

Finding the Fourth Proportional to 28,480.37, 39,247.40 and 20,507.54

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Solution

The fourth proportional to 28,480.37, 39,247.40 and 20,507.54 is: 28,260.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,480.37 : 39,247.40 = 20,507.54 : x
  2. Step 2: Convert to fraction form
    28,480.37/39,247.40 = 20,507.54/x
  3. Step 3: Cross multiply
    28,480.37x = 39,247.40 × 20,507.54
  4. Step 4: Simplify right side
    28,480.37x = 804,867,480.43
  5. Step 5: Solve for x
    x = 804,867,480.43/28,480.37
  6. Step 6: Final answer
    x = 28,260.43

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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.