Home / 20,620.80-30,935.52-6,768

Finding the Fourth Proportional to 20,620.80, 30,935.52 and 6,768

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Solution

The fourth proportional to 20,620.80, 30,935.52 and 6,768 is: 10,153.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.80 : 30,935.52 = 6,768 : x
  2. Step 2: Convert to fraction form
    20,620.80/30,935.52 = 6,768/x
  3. Step 3: Cross multiply
    20,620.80x = 30,935.52 × 6,768
  4. Step 4: Simplify right side
    20,620.80x = 209,371,599.36
  5. Step 5: Solve for x
    x = 209,371,599.36/20,620.80
  6. Step 6: Final answer
    x = 10,153.42

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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.