Home / 20,245,085.76-27,938,218.36-11,077,728.50

Finding the Fourth Proportional to 20,245,085.76, 27,938,218.36 and 11,077,728.50

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Solution

The fourth proportional to 20,245,085.76, 27,938,218.36 and 11,077,728.50 is: 15,287,265.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245,085.76 : 27,938,218.36 = 11,077,728.50 : x
  2. Step 2: Convert to fraction form
    20,245,085.76/27,938,218.36 = 11,077,728.50/x
  3. Step 3: Cross multiply
    20,245,085.76x = 27,938,218.36 × 11,077,728.50
  4. Step 4: Simplify right side
    20,245,085.76x = 309,491,997,765,795.25
  5. Step 5: Solve for x
    x = 309,491,997,765,795.25/20,245,085.76
  6. Step 6: Final answer
    x = 15,287,265.34

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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.