Home / 28,442.75-39,249.56-15,865.07

Finding the Fourth Proportional to 28,442.75, 39,249.56 and 15,865.07

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Solution

The fourth proportional to 28,442.75, 39,249.56 and 15,865.07 is: 21,892.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.75 : 39,249.56 = 15,865.07 : x
  2. Step 2: Convert to fraction form
    28,442.75/39,249.56 = 15,865.07/x
  3. Step 3: Cross multiply
    28,442.75x = 39,249.56 × 15,865.07
  4. Step 4: Simplify right side
    28,442.75x = 622,696,860.28
  5. Step 5: Solve for x
    x = 622,696,860.28/28,442.75
  6. Step 6: Final answer
    x = 21,892.99

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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.