Home / 20,705,628.80-31,058,443.20-13,166,019.20

Finding the Fourth Proportional to 20,705,628.80, 31,058,443.20 and 13,166,019.20

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Solution

The fourth proportional to 20,705,628.80, 31,058,443.20 and 13,166,019.20 is: 19,749,028.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705,628.80 : 31,058,443.20 = 13,166,019.20 : x
  2. Step 2: Convert to fraction form
    20,705,628.80/31,058,443.20 = 13,166,019.20/x
  3. Step 3: Cross multiply
    20,705,628.80x = 31,058,443.20 × 13,166,019.20
  4. Step 4: Simplify right side
    20,705,628.80x = 408,916,059,493,309.44
  5. Step 5: Solve for x
    x = 408,916,059,493,309.44/20,705,628.80
  6. Step 6: Final answer
    x = 19,749,028.80

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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.