Home / 20,786,785.08-28,671,530.22-13,553,238.84

Finding the Fourth Proportional to 20,786,785.08, 28,671,530.22 and 13,553,238.84

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Solution

The fourth proportional to 20,786,785.08, 28,671,530.22 and 13,553,238.84 is: 18,694,189.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786,785.08 : 28,671,530.22 = 13,553,238.84 : x
  2. Step 2: Convert to fraction form
    20,786,785.08/28,671,530.22 = 13,553,238.84/x
  3. Step 3: Cross multiply
    20,786,785.08x = 28,671,530.22 × 13,553,238.84
  4. Step 4: Simplify right side
    20,786,785.08x = 388,592,096,979,937.75
  5. Step 5: Solve for x
    x = 388,592,096,979,937.75/20,786,785.08
  6. Step 6: Final answer
    x = 18,694,189.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.