Home / 20,435.82-28,201.41-11,943.78

Finding the Fourth Proportional to 20,435.82, 28,201.41 and 11,943.78

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Solution

The fourth proportional to 20,435.82, 28,201.41 and 11,943.78 is: 16,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.82 : 28,201.41 = 11,943.78 : x
  2. Step 2: Convert to fraction form
    20,435.82/28,201.41 = 11,943.78/x
  3. Step 3: Cross multiply
    20,435.82x = 28,201.41 × 11,943.78
  4. Step 4: Simplify right side
    20,435.82x = 336,831,436.73
  5. Step 5: Solve for x
    x = 336,831,436.73/20,435.82
  6. Step 6: Final answer
    x = 16,482.40

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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.