Home / 20,609.54-28,440.84-11,656.72

Finding the Fourth Proportional to 20,609.54, 28,440.84 and 11,656.72

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Solution

The fourth proportional to 20,609.54, 28,440.84 and 11,656.72 is: 16,086.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.54 : 28,440.84 = 11,656.72 : x
  2. Step 2: Convert to fraction form
    20,609.54/28,440.84 = 11,656.72/x
  3. Step 3: Cross multiply
    20,609.54x = 28,440.84 × 11,656.72
  4. Step 4: Simplify right side
    20,609.54x = 331,526,908.44
  5. Step 5: Solve for x
    x = 331,526,908.44/20,609.54
  6. Step 6: Final answer
    x = 16,086.09

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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.