Home / 20,668.86-28,529.53-11,722.31

Finding the Fourth Proportional to 20,668.86, 28,529.53 and 11,722.31

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Solution

The fourth proportional to 20,668.86, 28,529.53 and 11,722.31 is: 16,180.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.86 : 28,529.53 = 11,722.31 : x
  2. Step 2: Convert to fraction form
    20,668.86/28,529.53 = 11,722.31/x
  3. Step 3: Cross multiply
    20,668.86x = 28,529.53 × 11,722.31
  4. Step 4: Simplify right side
    20,668.86x = 334,431,994.81
  5. Step 5: Solve for x
    x = 334,431,994.81/20,668.86
  6. Step 6: Final answer
    x = 16,180.48

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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.