Home / 15,015,917.87-20,722,129.91-8,821,225.67

Finding the Fourth Proportional to 15,015,917.87, 20,722,129.91 and 8,821,225.67

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Solution

The fourth proportional to 15,015,917.87, 20,722,129.91 and 8,821,225.67 is: 12,173,387.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015,917.87 : 20,722,129.91 = 8,821,225.67 : x
  2. Step 2: Convert to fraction form
    15,015,917.87/20,722,129.91 = 8,821,225.67/x
  3. Step 3: Cross multiply
    15,015,917.87x = 20,722,129.91 × 8,821,225.67
  4. Step 4: Simplify right side
    15,015,917.87x = 182,794,584,350,710.97
  5. Step 5: Solve for x
    x = 182,794,584,350,710.97/15,015,917.87
  6. Step 6: Final answer
    x = 12,173,387.33

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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.