Home / 20,446,981.75-28,216,380.69-11,279,622.07

Finding the Fourth Proportional to 20,446,981.75, 28,216,380.69 and 11,279,622.07

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Solution

The fourth proportional to 20,446,981.75, 28,216,380.69 and 11,279,622.07 is: 15,565,627.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,446,981.75 : 28,216,380.69 = 11,279,622.07 : x
  2. Step 2: Convert to fraction form
    20,446,981.75/28,216,380.69 = 11,279,622.07/x
  3. Step 3: Cross multiply
    20,446,981.75x = 28,216,380.69 × 11,279,622.07
  4. Step 4: Simplify right side
    20,446,981.75x = 318,270,110,366,445.88
  5. Step 5: Solve for x
    x = 318,270,110,366,445.88/20,446,981.75
  6. Step 6: Final answer
    x = 15,565,627.94

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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.