Home / 20,057.04-30,078.36-6,905.88

Finding the Fourth Proportional to 20,057.04, 30,078.36 and 6,905.88

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Solution

The fourth proportional to 20,057.04, 30,078.36 and 6,905.88 is: 10,356.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.04 : 30,078.36 = 6,905.88 : x
  2. Step 2: Convert to fraction form
    20,057.04/30,078.36 = 6,905.88/x
  3. Step 3: Cross multiply
    20,057.04x = 30,078.36 × 6,905.88
  4. Step 4: Simplify right side
    20,057.04x = 207,717,544.76
  5. Step 5: Solve for x
    x = 207,717,544.76/20,057.04
  6. Step 6: Final answer
    x = 10,356.34

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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.