Home / 20,391,301.20-30,586,951.80-12,329,144.40

Finding the Fourth Proportional to 20,391,301.20, 30,586,951.80 and 12,329,144.40

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Solution

The fourth proportional to 20,391,301.20, 30,586,951.80 and 12,329,144.40 is: 18,493,716.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391,301.20 : 30,586,951.80 = 12,329,144.40 : x
  2. Step 2: Convert to fraction form
    20,391,301.20/30,586,951.80 = 12,329,144.40/x
  3. Step 3: Cross multiply
    20,391,301.20x = 30,586,951.80 × 12,329,144.40
  4. Step 4: Simplify right side
    20,391,301.20x = 377,110,945,498,039.94
  5. Step 5: Solve for x
    x = 377,110,945,498,039.94/20,391,301.20
  6. Step 6: Final answer
    x = 18,493,716.60

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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.