Home / 20,405,540.52-28,160,919-11,238,180.84

Finding the Fourth Proportional to 20,405,540.52, 28,160,919 and 11,238,180.84

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Solution

The fourth proportional to 20,405,540.52, 28,160,919 and 11,238,180.84 is: 15,509,390.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,405,540.52 : 28,160,919 = 11,238,180.84 : x
  2. Step 2: Convert to fraction form
    20,405,540.52/28,160,919 = 11,238,180.84/x
  3. Step 3: Cross multiply
    20,405,540.52x = 28,160,919 × 11,238,180.84
  4. Step 4: Simplify right side
    20,405,540.52x = 316,477,500,342,591.94
  5. Step 5: Solve for x
    x = 316,477,500,342,591.94/20,405,540.52
  6. Step 6: Final answer
    x = 15,509,390.70

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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.