Home / 12,942.79-19,427.73-11,471.41

Finding the Fourth Proportional to 12,942.79, 19,427.73 and 11,471.41

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Solution

The fourth proportional to 12,942.79, 19,427.73 and 11,471.41 is: 17,219.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,942.79 : 19,427.73 = 11,471.41 : x
  2. Step 2: Convert to fraction form
    12,942.79/19,427.73 = 11,471.41/x
  3. Step 3: Cross multiply
    12,942.79x = 19,427.73 × 11,471.41
  4. Step 4: Simplify right side
    12,942.79x = 222,863,456.20
  5. Step 5: Solve for x
    x = 222,863,456.20/12,942.79
  6. Step 6: Final answer
    x = 17,219.12

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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.