Home / 20,559.55-30,840.43-6,520.64

Finding the Fourth Proportional to 20,559.55, 30,840.43 and 6,520.64

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Solution

The fourth proportional to 20,559.55, 30,840.43 and 6,520.64 is: 9,781.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.55 : 30,840.43 = 6,520.64 : x
  2. Step 2: Convert to fraction form
    20,559.55/30,840.43 = 6,520.64/x
  3. Step 3: Cross multiply
    20,559.55x = 30,840.43 × 6,520.64
  4. Step 4: Simplify right side
    20,559.55x = 201,099,385.97
  5. Step 5: Solve for x
    x = 201,099,385.97/20,559.55
  6. Step 6: Final answer
    x = 9,781.31

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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.