Home / 20,447,765.69-28,217,995.92-11,155,544.51

Finding the Fourth Proportional to 20,447,765.69, 28,217,995.92 and 11,155,544.51

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Solution

The fourth proportional to 20,447,765.69, 28,217,995.92 and 11,155,544.51 is: 15,394,694.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,447,765.69 : 28,217,995.92 = 11,155,544.51 : x
  2. Step 2: Convert to fraction form
    20,447,765.69/28,217,995.92 = 11,155,544.51/x
  3. Step 3: Cross multiply
    20,447,765.69x = 28,217,995.92 × 11,155,544.51
  4. Step 4: Simplify right side
    20,447,765.69x = 314,787,109,327,468.44
  5. Step 5: Solve for x
    x = 314,787,109,327,468.44/20,447,765.69
  6. Step 6: Final answer
    x = 15,394,694.67

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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.