Home / 20,245,087.75-27,938,221.11-11,077,730.50

Finding the Fourth Proportional to 20,245,087.75, 27,938,221.11 and 11,077,730.50

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Solution

The fourth proportional to 20,245,087.75, 27,938,221.11 and 11,077,730.50 is: 15,287,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245,087.75 : 27,938,221.11 = 11,077,730.50 : x
  2. Step 2: Convert to fraction form
    20,245,087.75/27,938,221.11 = 11,077,730.50/x
  3. Step 3: Cross multiply
    20,245,087.75x = 27,938,221.11 × 11,077,730.50
  4. Step 4: Simplify right side
    20,245,087.75x = 309,492,084,105,990.88
  5. Step 5: Solve for x
    x = 309,492,084,105,990.88/20,245,087.75
  6. Step 6: Final answer
    x = 15,287,268.10

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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.