Home / 20,758.54-28,650.44-12,260.09

Finding the Fourth Proportional to 20,758.54, 28,650.44 and 12,260.09

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Solution

The fourth proportional to 20,758.54, 28,650.44 and 12,260.09 is: 16,921.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.54 : 28,650.44 = 12,260.09 : x
  2. Step 2: Convert to fraction form
    20,758.54/28,650.44 = 12,260.09/x
  3. Step 3: Cross multiply
    20,758.54x = 28,650.44 × 12,260.09
  4. Step 4: Simplify right side
    20,758.54x = 351,256,860.34
  5. Step 5: Solve for x
    x = 351,256,860.34/20,758.54
  6. Step 6: Final answer
    x = 16,921.08

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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.