Home / 28,435.52-39,241.86-15,860

Finding the Fourth Proportional to 28,435.52, 39,241.86 and 15,860

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Solution

The fourth proportional to 28,435.52, 39,241.86 and 15,860 is: 21,887.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,435.52 : 39,241.86 = 15,860 : x
  2. Step 2: Convert to fraction form
    28,435.52/39,241.86 = 15,860/x
  3. Step 3: Cross multiply
    28,435.52x = 39,241.86 × 15,860
  4. Step 4: Simplify right side
    28,435.52x = 622,375,899.60
  5. Step 5: Solve for x
    x = 622,375,899.60/28,435.52
  6. Step 6: Final answer
    x = 21,887.27

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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.