Home / 20,768,007.20-31,133,348.40-13,191,072.80

Finding the Fourth Proportional to 20,768,007.20, 31,133,348.40 and 13,191,072.80

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Solution

The fourth proportional to 20,768,007.20, 31,133,348.40 and 13,191,072.80 is: 19,774,755.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768,007.20 : 31,133,348.40 = 13,191,072.80 : x
  2. Step 2: Convert to fraction form
    20,768,007.20/31,133,348.40 = 13,191,072.80/x
  3. Step 3: Cross multiply
    20,768,007.20x = 31,133,348.40 × 13,191,072.80
  4. Step 4: Simplify right side
    20,768,007.20x = 410,682,265,252,163.50
  5. Step 5: Solve for x
    x = 410,682,265,252,163.50/20,768,007.20
  6. Step 6: Final answer
    x = 19,774,755.53

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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.