Home / 20,479,157.87-28,260,698.24-11,311,603.79

Finding the Fourth Proportional to 20,479,157.87, 28,260,698.24 and 11,311,603.79

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Solution

The fourth proportional to 20,479,157.87, 28,260,698.24 and 11,311,603.79 is: 15,609,715.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479,157.87 : 28,260,698.24 = 11,311,603.79 : x
  2. Step 2: Convert to fraction form
    20,479,157.87/28,260,698.24 = 11,311,603.79/x
  3. Step 3: Cross multiply
    20,479,157.87x = 28,260,698.24 × 11,311,603.79
  4. Step 4: Simplify right side
    20,479,157.87x = 319,673,821,206,605.88
  5. Step 5: Solve for x
    x = 319,673,821,206,605.88/20,479,157.87
  6. Step 6: Final answer
    x = 15,609,715.17

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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.