Home / 20,738.45-31,107.63-16,558.88

Finding the Fourth Proportional to 20,738.45, 31,107.63 and 16,558.88

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Solution

The fourth proportional to 20,738.45, 31,107.63 and 16,558.88 is: 24,838.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.45 : 31,107.63 = 16,558.88 : x
  2. Step 2: Convert to fraction form
    20,738.45/31,107.63 = 16,558.88/x
  3. Step 3: Cross multiply
    20,738.45x = 31,107.63 × 16,558.88
  4. Step 4: Simplify right side
    20,738.45x = 515,107,356.72
  5. Step 5: Solve for x
    x = 515,107,356.72/20,738.45
  6. Step 6: Final answer
    x = 24,838.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.