Home / 21,002,803.80-31,504,205.70-19,727,345.40

Finding the Fourth Proportional to 21,002,803.80, 31,504,205.70 and 19,727,345.40

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Solution

The fourth proportional to 21,002,803.80, 31,504,205.70 and 19,727,345.40 is: 29,591,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002,803.80 : 31,504,205.70 = 19,727,345.40 : x
  2. Step 2: Convert to fraction form
    21,002,803.80/31,504,205.70 = 19,727,345.40/x
  3. Step 3: Cross multiply
    21,002,803.80x = 31,504,205.70 × 19,727,345.40
  4. Step 4: Simplify right side
    21,002,803.80x = 621,494,347,396,548.75
  5. Step 5: Solve for x
    x = 621,494,347,396,548.75/21,002,803.80
  6. Step 6: Final answer
    x = 29,591,018.10

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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.