Home / 21,954.96-30,295.31-12,394.36

Finding the Fourth Proportional to 21,954.96, 30,295.31 and 12,394.36

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Solution

The fourth proportional to 21,954.96, 30,295.31 and 12,394.36 is: 17,102.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,954.96 : 30,295.31 = 12,394.36 : x
  2. Step 2: Convert to fraction form
    21,954.96/30,295.31 = 12,394.36/x
  3. Step 3: Cross multiply
    21,954.96x = 30,295.31 × 12,394.36
  4. Step 4: Simplify right side
    21,954.96x = 375,490,978.45
  5. Step 5: Solve for x
    x = 375,490,978.45/21,954.96
  6. Step 6: Final answer
    x = 17,102.79

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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.