Home / 20,582.88-28,404.41-11,151.42

Finding the Fourth Proportional to 20,582.88, 28,404.41 and 11,151.42

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Solution

The fourth proportional to 20,582.88, 28,404.41 and 11,151.42 is: 15,388.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.88 : 28,404.41 = 11,151.42 : x
  2. Step 2: Convert to fraction form
    20,582.88/28,404.41 = 11,151.42/x
  3. Step 3: Cross multiply
    20,582.88x = 28,404.41 × 11,151.42
  4. Step 4: Simplify right side
    20,582.88x = 316,749,450.01
  5. Step 5: Solve for x
    x = 316,749,450.01/20,582.88
  6. Step 6: Final answer
    x = 15,388.98

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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.