Home / 28,640.24-39,520.32-15,892.64

Finding the Fourth Proportional to 28,640.24, 39,520.32 and 15,892.64

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Solution

The fourth proportional to 28,640.24, 39,520.32 and 15,892.64 is: 21,930.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,640.24 : 39,520.32 = 15,892.64 : x
  2. Step 2: Convert to fraction form
    28,640.24/39,520.32 = 15,892.64/x
  3. Step 3: Cross multiply
    28,640.24x = 39,520.32 × 15,892.64
  4. Step 4: Simplify right side
    28,640.24x = 628,082,218.44
  5. Step 5: Solve for x
    x = 628,082,218.44/28,640.24
  6. Step 6: Final answer
    x = 21,930.06

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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.