Home / 21,278.58-29,361.92-12,324.34

Finding the Fourth Proportional to 21,278.58, 29,361.92 and 12,324.34

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Solution

The fourth proportional to 21,278.58, 29,361.92 and 12,324.34 is: 17,006.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278.58 : 29,361.92 = 12,324.34 : x
  2. Step 2: Convert to fraction form
    21,278.58/29,361.92 = 12,324.34/x
  3. Step 3: Cross multiply
    21,278.58x = 29,361.92 × 12,324.34
  4. Step 4: Simplify right side
    21,278.58x = 361,866,285.13
  5. Step 5: Solve for x
    x = 361,866,285.13/21,278.58
  6. Step 6: Final answer
    x = 17,006.13

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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.