Home / 28,435.77-39,242.21-15,860.25

Finding the Fourth Proportional to 28,435.77, 39,242.21 and 15,860.25

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Solution

The fourth proportional to 28,435.77, 39,242.21 and 15,860.25 is: 21,887.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,435.77 : 39,242.21 = 15,860.25 : x
  2. Step 2: Convert to fraction form
    28,435.77/39,242.21 = 15,860.25/x
  3. Step 3: Cross multiply
    28,435.77x = 39,242.21 × 15,860.25
  4. Step 4: Simplify right side
    28,435.77x = 622,391,181.85
  5. Step 5: Solve for x
    x = 622,391,181.85/28,435.77
  6. Step 6: Final answer
    x = 21,887.61

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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.