Home / 20,515,868.64-28,309,125.39-11,696,457.62

Finding the Fourth Proportional to 20,515,868.64, 28,309,125.39 and 11,696,457.62

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Solution

The fourth proportional to 20,515,868.64, 28,309,125.39 and 11,696,457.62 is: 16,139,530.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515,868.64 : 28,309,125.39 = 11,696,457.62 : x
  2. Step 2: Convert to fraction form
    20,515,868.64/28,309,125.39 = 11,696,457.62/x
  3. Step 3: Cross multiply
    20,515,868.64x = 28,309,125.39 × 11,696,457.62
  4. Step 4: Simplify right side
    20,515,868.64x = 331,116,485,383,400.94
  5. Step 5: Solve for x
    x = 331,116,485,383,400.94/20,515,868.64
  6. Step 6: Final answer
    x = 16,139,530.39

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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.