Home / 21,002,956.80-31,504,435.20-13,824,153.60

Finding the Fourth Proportional to 21,002,956.80, 31,504,435.20 and 13,824,153.60

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Solution

The fourth proportional to 21,002,956.80, 31,504,435.20 and 13,824,153.60 is: 20,736,230.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,956.80 : 31,504,435.20 = 13,824,153.60 : x
  2. Step 2: Convert to fraction form
    21,002,956.80/31,504,435.20 = 13,824,153.60/x
  3. Step 3: Cross multiply
    21,002,956.80x = 31,504,435.20 × 13,824,153.60
  4. Step 4: Simplify right side
    21,002,956.80x = 435,522,151,286,046.69
  5. Step 5: Solve for x
    x = 435,522,151,286,046.69/21,002,956.80
  6. Step 6: Final answer
    x = 20,736,230.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.