Home / 20,786,784.33-28,671,529.19-13,553,238.09

Finding the Fourth Proportional to 20,786,784.33, 28,671,529.19 and 13,553,238.09

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Solution

The fourth proportional to 20,786,784.33, 28,671,529.19 and 13,553,238.09 is: 18,694,188.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786,784.33 : 28,671,529.19 = 13,553,238.09 : x
  2. Step 2: Convert to fraction form
    20,786,784.33/28,671,529.19 = 13,553,238.09/x
  3. Step 3: Cross multiply
    20,786,784.33x = 28,671,529.19 × 13,553,238.09
  4. Step 4: Simplify right side
    20,786,784.33x = 388,592,061,448,688.62
  5. Step 5: Solve for x
    x = 388,592,061,448,688.62/20,786,784.33
  6. Step 6: Final answer
    x = 18,694,188.35

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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.