Home / 20,804,913.80-31,207,370.70-18,285,489.80

Finding the Fourth Proportional to 20,804,913.80, 31,207,370.70 and 18,285,489.80

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Solution

The fourth proportional to 20,804,913.80, 31,207,370.70 and 18,285,489.80 is: 27,428,234.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804,913.80 : 31,207,370.70 = 18,285,489.80 : x
  2. Step 2: Convert to fraction form
    20,804,913.80/31,207,370.70 = 18,285,489.80/x
  3. Step 3: Cross multiply
    20,804,913.80x = 31,207,370.70 × 18,285,489.80
  4. Step 4: Simplify right side
    20,804,913.80x = 570,642,058,619,668.88
  5. Step 5: Solve for x
    x = 570,642,058,619,668.88/20,804,913.80
  6. Step 6: Final answer
    x = 27,428,234.70

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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.