Home / 20,189,995.20-30,284,992.80-12,127,838.40

Finding the Fourth Proportional to 20,189,995.20, 30,284,992.80 and 12,127,838.40

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Solution

The fourth proportional to 20,189,995.20, 30,284,992.80 and 12,127,838.40 is: 18,191,757.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189,995.20 : 30,284,992.80 = 12,127,838.40 : x
  2. Step 2: Convert to fraction form
    20,189,995.20/30,284,992.80 = 12,127,838.40/x
  3. Step 3: Cross multiply
    20,189,995.20x = 30,284,992.80 × 12,127,838.40
  4. Step 4: Simplify right side
    20,189,995.20x = 367,291,498,623,563.56
  5. Step 5: Solve for x
    x = 367,291,498,623,563.56/20,189,995.20
  6. Step 6: Final answer
    x = 18,191,757.60

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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.