Home / 20,582.66-28,404.06-11,151.22

Finding the Fourth Proportional to 20,582.66, 28,404.06 and 11,151.22

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Solution

The fourth proportional to 20,582.66, 28,404.06 and 11,151.22 is: 15,388.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.66 : 28,404.06 = 11,151.22 : x
  2. Step 2: Convert to fraction form
    20,582.66/28,404.06 = 11,151.22/x
  3. Step 3: Cross multiply
    20,582.66x = 28,404.06 × 11,151.22
  4. Step 4: Simplify right side
    20,582.66x = 316,739,921.95
  5. Step 5: Solve for x
    x = 316,739,921.95/20,582.66
  6. Step 6: Final answer
    x = 15,388.68

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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.