Home / 20,005.05-30,011.22-6,858.75

Finding the Fourth Proportional to 20,005.05, 30,011.22 and 6,858.75

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Solution

The fourth proportional to 20,005.05, 30,011.22 and 6,858.75 is: 10,289.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,005.05 : 30,011.22 = 6,858.75 : x
  2. Step 2: Convert to fraction form
    20,005.05/30,011.22 = 6,858.75/x
  3. Step 3: Cross multiply
    20,005.05x = 30,011.22 × 6,858.75
  4. Step 4: Simplify right side
    20,005.05x = 205,839,455.18
  5. Step 5: Solve for x
    x = 205,839,455.18/20,005.05
  6. Step 6: Final answer
    x = 10,289.37

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1.5x scale

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.