Home / 21,002,816.80-31,504,225.20-12,358,043.20

Finding the Fourth Proportional to 21,002,816.80, 31,504,225.20 and 12,358,043.20

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Solution

The fourth proportional to 21,002,816.80, 31,504,225.20 and 12,358,043.20 is: 18,537,064.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,816.80 : 31,504,225.20 = 12,358,043.20 : x
  2. Step 2: Convert to fraction form
    21,002,816.80/31,504,225.20 = 12,358,043.20/x
  3. Step 3: Cross multiply
    21,002,816.80x = 31,504,225.20 × 12,358,043.20
  4. Step 4: Simplify right side
    21,002,816.80x = 389,330,576,004,128.62
  5. Step 5: Solve for x
    x = 389,330,576,004,128.62/21,002,816.80
  6. Step 6: Final answer
    x = 18,537,064.80

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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.