Home / 18,721,842.60-28,085,874.30-7,362,661.80

Finding the Fourth Proportional to 18,721,842.60, 28,085,874.30 and 7,362,661.80

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Solution

The fourth proportional to 18,721,842.60, 28,085,874.30 and 7,362,661.80 is: 11,045,215.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,842.60 : 28,085,874.30 = 7,362,661.80 : x
  2. Step 2: Convert to fraction form
    18,721,842.60/28,085,874.30 = 7,362,661.80/x
  3. Step 3: Cross multiply
    18,721,842.60x = 28,085,874.30 × 7,362,661.80
  4. Step 4: Simplify right side
    18,721,842.60x = 206,786,793,828,211.75
  5. Step 5: Solve for x
    x = 206,786,793,828,211.75/18,721,842.60
  6. Step 6: Final answer
    x = 11,045,215.91

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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.