Home / 13,857,025.80-20,785,538.70-12,439,849.80

Finding the Fourth Proportional to 13,857,025.80, 20,785,538.70 and 12,439,849.80

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Solution

The fourth proportional to 13,857,025.80, 20,785,538.70 and 12,439,849.80 is: 18,659,774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857,025.80 : 20,785,538.70 = 12,439,849.80 : x
  2. Step 2: Convert to fraction form
    13,857,025.80/20,785,538.70 = 12,439,849.80/x
  3. Step 3: Cross multiply
    13,857,025.80x = 20,785,538.70 × 12,439,849.80
  4. Step 4: Simplify right side
    13,857,025.80x = 258,568,979,440,087.28
  5. Step 5: Solve for x
    x = 258,568,979,440,087.28/13,857,025.80
  6. Step 6: Final answer
    x = 18,659,774.70

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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.