Home / 30,285.80-45,477.30-20,468.60

Finding the Fourth Proportional to 30,285.80, 45,477.30 and 20,468.60

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Solution

The fourth proportional to 30,285.80, 45,477.30 and 20,468.60 is: 30,735.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,285.80 : 45,477.30 = 20,468.60 : x
  2. Step 2: Convert to fraction form
    30,285.80/45,477.30 = 20,468.60/x
  3. Step 3: Cross multiply
    30,285.80x = 45,477.30 × 20,468.60
  4. Step 4: Simplify right side
    30,285.80x = 930,856,662.78
  5. Step 5: Solve for x
    x = 930,856,662.78/30,285.80
  6. Step 6: Final answer
    x = 30,735.75

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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.