Home / 20,436,992.75-28,203,731.05-11,145,071.35

Finding the Fourth Proportional to 20,436,992.75, 28,203,731.05 and 11,145,071.35

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Solution

The fourth proportional to 20,436,992.75, 28,203,731.05 and 11,145,071.35 is: 15,380,569.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436,992.75 : 28,203,731.05 = 11,145,071.35 : x
  2. Step 2: Convert to fraction form
    20,436,992.75/28,203,731.05 = 11,145,071.35/x
  3. Step 3: Cross multiply
    20,436,992.75x = 28,203,731.05 × 11,145,071.35
  4. Step 4: Simplify right side
    20,436,992.75x = 314,332,594,888,460.44
  5. Step 5: Solve for x
    x = 314,332,594,888,460.44/20,436,992.75
  6. Step 6: Final answer
    x = 15,380,569.87

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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.