Home / 20,754,650.80-31,131,976.20-13,215,041.20

Finding the Fourth Proportional to 20,754,650.80, 31,131,976.20 and 13,215,041.20

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Solution

The fourth proportional to 20,754,650.80, 31,131,976.20 and 13,215,041.20 is: 19,822,561.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754,650.80 : 31,131,976.20 = 13,215,041.20 : x
  2. Step 2: Convert to fraction form
    20,754,650.80/31,131,976.20 = 13,215,041.20/x
  3. Step 3: Cross multiply
    20,754,650.80x = 31,131,976.20 × 13,215,041.20
  4. Step 4: Simplify right side
    20,754,650.80x = 411,410,348,120,419.44
  5. Step 5: Solve for x
    x = 411,410,348,120,419.44/20,754,650.80
  6. Step 6: Final answer
    x = 19,822,561.80

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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.