Home / 20,628.86-28,466.10-11,674.31

Finding the Fourth Proportional to 20,628.86, 28,466.10 and 11,674.31

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Solution

The fourth proportional to 20,628.86, 28,466.10 and 11,674.31 is: 16,109.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.86 : 28,466.10 = 11,674.31 : x
  2. Step 2: Convert to fraction form
    20,628.86/28,466.10 = 11,674.31/x
  3. Step 3: Cross multiply
    20,628.86x = 28,466.10 × 11,674.31
  4. Step 4: Simplify right side
    20,628.86x = 332,321,933.56
  5. Step 5: Solve for x
    x = 332,321,933.56/20,628.86
  6. Step 6: Final answer
    x = 16,109.57

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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.