Home / 20,733,405.80-31,100,108.70-13,193,796.20

Finding the Fourth Proportional to 20,733,405.80, 31,100,108.70 and 13,193,796.20

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Solution

The fourth proportional to 20,733,405.80, 31,100,108.70 and 13,193,796.20 is: 19,790,694.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733,405.80 : 31,100,108.70 = 13,193,796.20 : x
  2. Step 2: Convert to fraction form
    20,733,405.80/31,100,108.70 = 13,193,796.20/x
  3. Step 3: Cross multiply
    20,733,405.80x = 31,100,108.70 × 13,193,796.20
  4. Step 4: Simplify right side
    20,733,405.80x = 410,328,495,985,646.94
  5. Step 5: Solve for x
    x = 410,328,495,985,646.94/20,733,405.80
  6. Step 6: Final answer
    x = 19,790,694.30

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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.