Home / 20,427.66-28,191.24-12,468.60

Finding the Fourth Proportional to 20,427.66, 28,191.24 and 12,468.60

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Solution

The fourth proportional to 20,427.66, 28,191.24 and 12,468.60 is: 17,207.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.66 : 28,191.24 = 12,468.60 : x
  2. Step 2: Convert to fraction form
    20,427.66/28,191.24 = 12,468.60/x
  3. Step 3: Cross multiply
    20,427.66x = 28,191.24 × 12,468.60
  4. Step 4: Simplify right side
    20,427.66x = 351,505,295.06
  5. Step 5: Solve for x
    x = 351,505,295.06/20,427.66
  6. Step 6: Final answer
    x = 17,207.32

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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.