Home / 20,520,426.24-28,317,976.92-11,353,134.60

Finding the Fourth Proportional to 20,520,426.24, 28,317,976.92 and 11,353,134.60

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Solution

The fourth proportional to 20,520,426.24, 28,317,976.92 and 11,353,134.60 is: 15,667,208.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520,426.24 : 28,317,976.92 = 11,353,134.60 : x
  2. Step 2: Convert to fraction form
    20,520,426.24/28,317,976.92 = 11,353,134.60/x
  3. Step 3: Cross multiply
    20,520,426.24x = 28,317,976.92 × 11,353,134.60
  4. Step 4: Simplify right side
    20,520,426.24x = 321,497,803,572,453.44
  5. Step 5: Solve for x
    x = 321,497,803,572,453.44/20,520,426.24
  6. Step 6: Final answer
    x = 15,667,208.85

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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.