Home / 20,674.21-28,529.26-11,242.69

Finding the Fourth Proportional to 20,674.21, 28,529.26 and 11,242.69

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Solution

The fourth proportional to 20,674.21, 28,529.26 and 11,242.69 is: 15,514.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.21 : 28,529.26 = 11,242.69 : x
  2. Step 2: Convert to fraction form
    20,674.21/28,529.26 = 11,242.69/x
  3. Step 3: Cross multiply
    20,674.21x = 28,529.26 × 11,242.69
  4. Step 4: Simplify right side
    20,674.21x = 320,745,626.11
  5. Step 5: Solve for x
    x = 320,745,626.11/20,674.21
  6. Step 6: Final answer
    x = 15,514.29

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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.