Home / 57,791.32-86,682.66-20,855.32

Finding the Fourth Proportional to 57,791.32, 86,682.66 and 20,855.32

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Solution

The fourth proportional to 57,791.32, 86,682.66 and 20,855.32 is: 31,281.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,791.32 : 86,682.66 = 20,855.32 : x
  2. Step 2: Convert to fraction form
    57,791.32/86,682.66 = 20,855.32/x
  3. Step 3: Cross multiply
    57,791.32x = 86,682.66 × 20,855.32
  4. Step 4: Simplify right side
    57,791.32x = 1,807,794,612.75
  5. Step 5: Solve for x
    x = 1,807,794,612.75/57,791.32
  6. Step 6: Final answer
    x = 31,281.42

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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.