Home / 20,900,016.81-28,842,379.65-11,481,204.87

Finding the Fourth Proportional to 20,900,016.81, 28,842,379.65 and 11,481,204.87

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Solution

The fourth proportional to 20,900,016.81, 28,842,379.65 and 11,481,204.87 is: 15,844,258.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900,016.81 : 28,842,379.65 = 11,481,204.87 : x
  2. Step 2: Convert to fraction form
    20,900,016.81/28,842,379.65 = 11,481,204.87/x
  3. Step 3: Cross multiply
    20,900,016.81x = 28,842,379.65 × 11,481,204.87
  4. Step 4: Simplify right side
    20,900,016.81x = 331,145,269,699,968.88
  5. Step 5: Solve for x
    x = 331,145,269,699,968.88/20,900,016.81
  6. Step 6: Final answer
    x = 15,844,258.53

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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.