Home / 20,904.94-31,356.56-5,322.96

Finding the Fourth Proportional to 20,904.94, 31,356.56 and 5,322.96

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Solution

The fourth proportional to 20,904.94, 31,356.56 and 5,322.96 is: 7,984.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.94 : 31,356.56 = 5,322.96 : x
  2. Step 2: Convert to fraction form
    20,904.94/31,356.56 = 5,322.96/x
  3. Step 3: Cross multiply
    20,904.94x = 31,356.56 × 5,322.96
  4. Step 4: Simplify right side
    20,904.94x = 166,909,714.62
  5. Step 5: Solve for x
    x = 166,909,714.62/20,904.94
  6. Step 6: Final answer
    x = 7,984.22

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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.