Home / 20,478,427.11-30,722,222.43-7,699,042.53

Finding the Fourth Proportional to 20,478,427.11, 30,722,222.43 and 7,699,042.53

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Solution

The fourth proportional to 20,478,427.11, 30,722,222.43 and 7,699,042.53 is: 11,550,286.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,478,427.11 : 30,722,222.43 = 7,699,042.53 : x
  2. Step 2: Convert to fraction form
    20,478,427.11/30,722,222.43 = 7,699,042.53/x
  3. Step 3: Cross multiply
    20,478,427.11x = 30,722,222.43 × 7,699,042.53
  4. Step 4: Simplify right side
    20,478,427.11x = 236,531,697,104,689.97
  5. Step 5: Solve for x
    x = 236,531,697,104,689.97/20,478,427.11
  6. Step 6: Final answer
    x = 11,550,286.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.