Home / 39,698.07-54,780.21-21,793.02

Finding the Fourth Proportional to 39,698.07, 54,780.21 and 21,793.02

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Solution

The fourth proportional to 39,698.07, 54,780.21 and 21,793.02 is: 30,072.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,698.07 : 54,780.21 = 21,793.02 : x
  2. Step 2: Convert to fraction form
    39,698.07/54,780.21 = 21,793.02/x
  3. Step 3: Cross multiply
    39,698.07x = 54,780.21 × 21,793.02
  4. Step 4: Simplify right side
    39,698.07x = 1,193,826,212.13
  5. Step 5: Solve for x
    x = 1,193,826,212.13/39,698.07
  6. Step 6: Final answer
    x = 30,072.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.