Home / 21,354.36-29,469.04-11,922.92

Finding the Fourth Proportional to 21,354.36, 29,469.04 and 11,922.92

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Solution

The fourth proportional to 21,354.36, 29,469.04 and 11,922.92 is: 16,453.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,354.36 : 29,469.04 = 11,922.92 : x
  2. Step 2: Convert to fraction form
    21,354.36/29,469.04 = 11,922.92/x
  3. Step 3: Cross multiply
    21,354.36x = 29,469.04 × 11,922.92
  4. Step 4: Simplify right side
    21,354.36x = 351,357,006.40
  5. Step 5: Solve for x
    x = 351,357,006.40/21,354.36
  6. Step 6: Final answer
    x = 16,453.64

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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.