Home / 20,571.41-28,399.85-12,922.66

Finding the Fourth Proportional to 20,571.41, 28,399.85 and 12,922.66

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Solution

The fourth proportional to 20,571.41, 28,399.85 and 12,922.66 is: 17,840.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.41 : 28,399.85 = 12,922.66 : x
  2. Step 2: Convert to fraction form
    20,571.41/28,399.85 = 12,922.66/x
  3. Step 3: Cross multiply
    20,571.41x = 28,399.85 × 12,922.66
  4. Step 4: Simplify right side
    20,571.41x = 367,001,677.56
  5. Step 5: Solve for x
    x = 367,001,677.56/20,571.41
  6. Step 6: Final answer
    x = 17,840.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.