Home / 20,949.54-28,936.38-15,668.34

Finding the Fourth Proportional to 20,949.54, 28,936.38 and 15,668.34

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Solution

The fourth proportional to 20,949.54, 28,936.38 and 15,668.34 is: 21,641.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.54 : 28,936.38 = 15,668.34 : x
  2. Step 2: Convert to fraction form
    20,949.54/28,936.38 = 15,668.34/x
  3. Step 3: Cross multiply
    20,949.54x = 28,936.38 × 15,668.34
  4. Step 4: Simplify right side
    20,949.54x = 453,385,040.21
  5. Step 5: Solve for x
    x = 453,385,040.21/20,949.54
  6. Step 6: Final answer
    x = 21,641.77

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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.