Home / 20,751.80-31,118.34-5,957.36

Finding the Fourth Proportional to 20,751.80, 31,118.34 and 5,957.36

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Solution

The fourth proportional to 20,751.80, 31,118.34 and 5,957.36 is: 8,933.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.80 : 31,118.34 = 5,957.36 : x
  2. Step 2: Convert to fraction form
    20,751.80/31,118.34 = 5,957.36/x
  3. Step 3: Cross multiply
    20,751.80x = 31,118.34 × 5,957.36
  4. Step 4: Simplify right side
    20,751.80x = 185,383,153.98
  5. Step 5: Solve for x
    x = 185,383,153.98/20,751.80
  6. Step 6: Final answer
    x = 8,933.35

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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.