Home / 20,945.68-28,907.76-11,994.64

Finding the Fourth Proportional to 20,945.68, 28,907.76 and 11,994.64

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Solution

The fourth proportional to 20,945.68, 28,907.76 and 11,994.64 is: 16,554.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.68 : 28,907.76 = 11,994.64 : x
  2. Step 2: Convert to fraction form
    20,945.68/28,907.76 = 11,994.64/x
  3. Step 3: Cross multiply
    20,945.68x = 28,907.76 × 11,994.64
  4. Step 4: Simplify right side
    20,945.68x = 346,738,174.41
  5. Step 5: Solve for x
    x = 346,738,174.41/20,945.68
  6. Step 6: Final answer
    x = 16,554.16

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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.