Home / 28,558.78-39,411.36-15,983.53

Finding the Fourth Proportional to 28,558.78, 39,411.36 and 15,983.53

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Solution

The fourth proportional to 28,558.78, 39,411.36 and 15,983.53 is: 22,057.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.78 : 39,411.36 = 15,983.53 : x
  2. Step 2: Convert to fraction form
    28,558.78/39,411.36 = 15,983.53/x
  3. Step 3: Cross multiply
    28,558.78x = 39,411.36 × 15,983.53
  4. Step 4: Simplify right side
    28,558.78x = 629,932,556.37
  5. Step 5: Solve for x
    x = 629,932,556.37/28,558.78
  6. Step 6: Final answer
    x = 22,057.41

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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.