Home / 20,754,435.80-31,131,653.70-13,214,826.20

Finding the Fourth Proportional to 20,754,435.80, 31,131,653.70 and 13,214,826.20

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Solution

The fourth proportional to 20,754,435.80, 31,131,653.70 and 13,214,826.20 is: 19,822,239.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754,435.80 : 31,131,653.70 = 13,214,826.20 : x
  2. Step 2: Convert to fraction form
    20,754,435.80/31,131,653.70 = 13,214,826.20/x
  3. Step 3: Cross multiply
    20,754,435.80x = 31,131,653.70 × 13,214,826.20
  4. Step 4: Simplify right side
    20,754,435.80x = 411,399,392,964,086.94
  5. Step 5: Solve for x
    x = 411,399,392,964,086.94/20,754,435.80
  6. Step 6: Final answer
    x = 19,822,239.30

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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.