Home / 20,504,963.80-30,757,445.70-10,915,406.20

Finding the Fourth Proportional to 20,504,963.80, 30,757,445.70 and 10,915,406.20

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Solution

The fourth proportional to 20,504,963.80, 30,757,445.70 and 10,915,406.20 is: 16,373,109.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504,963.80 : 30,757,445.70 = 10,915,406.20 : x
  2. Step 2: Convert to fraction form
    20,504,963.80/30,757,445.70 = 10,915,406.20/x
  3. Step 3: Cross multiply
    20,504,963.80x = 30,757,445.70 × 10,915,406.20
  4. Step 4: Simplify right side
    20,504,963.80x = 335,730,013,489,943.31
  5. Step 5: Solve for x
    x = 335,730,013,489,943.31/20,504,963.80
  6. Step 6: Final answer
    x = 16,373,109.30

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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.