Home / 20,646.72-28,492.78-11,694

Finding the Fourth Proportional to 20,646.72, 28,492.78 and 11,694

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Solution

The fourth proportional to 20,646.72, 28,492.78 and 11,694 is: 16,137.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.72 : 28,492.78 = 11,694 : x
  2. Step 2: Convert to fraction form
    20,646.72/28,492.78 = 11,694/x
  3. Step 3: Cross multiply
    20,646.72x = 28,492.78 × 11,694
  4. Step 4: Simplify right side
    20,646.72x = 333,194,569.32
  5. Step 5: Solve for x
    x = 333,194,569.32/20,646.72
  6. Step 6: Final answer
    x = 16,137.89

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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.