Home / 20,790,340.65-31,183,128.50-5,439,111.75

Finding the Fourth Proportional to 20,790,340.65, 31,183,128.50 and 5,439,111.75

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Solution

The fourth proportional to 20,790,340.65, 31,183,128.50 and 5,439,111.75 is: 8,158,044.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,340.65 : 31,183,128.50 = 5,439,111.75 : x
  2. Step 2: Convert to fraction form
    20,790,340.65/31,183,128.50 = 5,439,111.75/x
  3. Step 3: Cross multiply
    20,790,340.65x = 31,183,128.50 × 5,439,111.75
  4. Step 4: Simplify right side
    20,790,340.65x = 169,608,520,598,914.31
  5. Step 5: Solve for x
    x = 169,608,520,598,914.31/20,790,340.65
  6. Step 6: Final answer
    x = 8,158,044.33

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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.