Home / 20,673.72-28,529.93-11,242.48

Finding the Fourth Proportional to 20,673.72, 28,529.93 and 11,242.48

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Solution

The fourth proportional to 20,673.72, 28,529.93 and 11,242.48 is: 15,514.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.72 : 28,529.93 = 11,242.48 : x
  2. Step 2: Convert to fraction form
    20,673.72/28,529.93 = 11,242.48/x
  3. Step 3: Cross multiply
    20,673.72x = 28,529.93 × 11,242.48
  4. Step 4: Simplify right side
    20,673.72x = 320,747,167.43
  5. Step 5: Solve for x
    x = 320,747,167.43/20,673.72
  6. Step 6: Final answer
    x = 15,514.73

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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.