Home / 42,471.54-63,716.58-12,891.60

Finding the Fourth Proportional to 42,471.54, 63,716.58 and 12,891.60

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Solution

The fourth proportional to 42,471.54, 63,716.58 and 12,891.60 is: 19,340.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,471.54 : 63,716.58 = 12,891.60 : x
  2. Step 2: Convert to fraction form
    42,471.54/63,716.58 = 12,891.60/x
  3. Step 3: Cross multiply
    42,471.54x = 63,716.58 × 12,891.60
  4. Step 4: Simplify right side
    42,471.54x = 821,408,662.73
  5. Step 5: Solve for x
    x = 821,408,662.73/42,471.54
  6. Step 6: Final answer
    x = 19,340.21

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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.