Home / 20,515,869.63-28,309,126.77-11,696,458.62

Finding the Fourth Proportional to 20,515,869.63, 28,309,126.77 and 11,696,458.62

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Solution

The fourth proportional to 20,515,869.63, 28,309,126.77 and 11,696,458.62 is: 16,139,531.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515,869.63 : 28,309,126.77 = 11,696,458.62 : x
  2. Step 2: Convert to fraction form
    20,515,869.63/28,309,126.77 = 11,696,458.62/x
  3. Step 3: Cross multiply
    20,515,869.63x = 28,309,126.77 × 11,696,458.62
  4. Step 4: Simplify right side
    20,515,869.63x = 331,116,529,833,639.25
  5. Step 5: Solve for x
    x = 331,116,529,833,639.25/20,515,869.63
  6. Step 6: Final answer
    x = 16,139,531.78

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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.