Home / 15,219,571.20-20,991,880.80-9,716,729.28

Finding the Fourth Proportional to 15,219,571.20, 20,991,880.80 and 9,716,729.28

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Solution

The fourth proportional to 15,219,571.20, 20,991,880.80 and 9,716,729.28 is: 13,401,982.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219,571.20 : 20,991,880.80 = 9,716,729.28 : x
  2. Step 2: Convert to fraction form
    15,219,571.20/20,991,880.80 = 9,716,729.28/x
  3. Step 3: Cross multiply
    15,219,571.20x = 20,991,880.80 × 9,716,729.28
  4. Step 4: Simplify right side
    15,219,571.20x = 203,972,422,811,629.81
  5. Step 5: Solve for x
    x = 203,972,422,811,629.81/15,219,571.20
  6. Step 6: Final answer
    x = 13,401,982.23

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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.