Home / 20,321,769.45-28,067,316.93-13,383,462.66

Finding the Fourth Proportional to 20,321,769.45, 28,067,316.93 and 13,383,462.66

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Solution

The fourth proportional to 20,321,769.45, 28,067,316.93 and 13,383,462.66 is: 18,484,506.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321,769.45 : 28,067,316.93 = 13,383,462.66 : x
  2. Step 2: Convert to fraction form
    20,321,769.45/28,067,316.93 = 13,383,462.66/x
  3. Step 3: Cross multiply
    20,321,769.45x = 28,067,316.93 × 13,383,462.66
  4. Step 4: Simplify right side
    20,321,769.45x = 375,637,888,099,040.81
  5. Step 5: Solve for x
    x = 375,637,888,099,040.81/20,321,769.45
  6. Step 6: Final answer
    x = 18,484,506.92

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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.