Home / 21,001,638.96-31,503,459.84-10,206,078.48

Finding the Fourth Proportional to 21,001,638.96, 31,503,459.84 and 10,206,078.48

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Solution

The fourth proportional to 21,001,638.96, 31,503,459.84 and 10,206,078.48 is: 15,309,604.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001,638.96 : 31,503,459.84 = 10,206,078.48 : x
  2. Step 2: Convert to fraction form
    21,001,638.96/31,503,459.84 = 10,206,078.48/x
  3. Step 3: Cross multiply
    21,001,638.96x = 31,503,459.84 × 10,206,078.48
  4. Step 4: Simplify right side
    21,001,638.96x = 321,526,783,518,568.25
  5. Step 5: Solve for x
    x = 321,526,783,518,568.25/21,001,638.96
  6. Step 6: Final answer
    x = 15,309,604.37

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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.