Home / 20,698.56-31,051.68-6,847.68

Finding the Fourth Proportional to 20,698.56, 31,051.68 and 6,847.68

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Solution

The fourth proportional to 20,698.56, 31,051.68 and 6,847.68 is: 10,272.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.56 : 31,051.68 = 6,847.68 : x
  2. Step 2: Convert to fraction form
    20,698.56/31,051.68 = 6,847.68/x
  3. Step 3: Cross multiply
    20,698.56x = 31,051.68 × 6,847.68
  4. Step 4: Simplify right side
    20,698.56x = 212,631,968.10
  5. Step 5: Solve for x
    x = 212,631,968.10/20,698.56
  6. Step 6: Final answer
    x = 10,272.79

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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.