Home / 20,204.58-30,285.81-11,877.78

Finding the Fourth Proportional to 20,204.58, 30,285.81 and 11,877.78

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Solution

The fourth proportional to 20,204.58, 30,285.81 and 11,877.78 is: 17,804.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,204.58 : 30,285.81 = 11,877.78 : x
  2. Step 2: Convert to fraction form
    20,204.58/30,285.81 = 11,877.78/x
  3. Step 3: Cross multiply
    20,204.58x = 30,285.81 × 11,877.78
  4. Step 4: Simplify right side
    20,204.58x = 359,728,188.30
  5. Step 5: Solve for x
    x = 359,728,188.30/20,204.58
  6. Step 6: Final answer
    x = 17,804.29

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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.