Home / 20,650.82-28,499.54-11,698.40

Finding the Fourth Proportional to 20,650.82, 28,499.54 and 11,698.40

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Solution

The fourth proportional to 20,650.82, 28,499.54 and 11,698.40 is: 16,144.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.82 : 28,499.54 = 11,698.40 : x
  2. Step 2: Convert to fraction form
    20,650.82/28,499.54 = 11,698.40/x
  3. Step 3: Cross multiply
    20,650.82x = 28,499.54 × 11,698.40
  4. Step 4: Simplify right side
    20,650.82x = 333,398,888.68
  5. Step 5: Solve for x
    x = 333,398,888.68/20,650.82
  6. Step 6: Final answer
    x = 16,144.58

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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.