Home / 20,392,201.82-28,137,945.76-11,688,772.88

Finding the Fourth Proportional to 20,392,201.82, 28,137,945.76 and 11,688,772.88

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Solution

The fourth proportional to 20,392,201.82, 28,137,945.76 and 11,688,772.88 is: 16,128,619.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392,201.82 : 28,137,945.76 = 11,688,772.88 : x
  2. Step 2: Convert to fraction form
    20,392,201.82/28,137,945.76 = 11,688,772.88/x
  3. Step 3: Cross multiply
    20,392,201.82x = 28,137,945.76 × 11,688,772.88
  4. Step 4: Simplify right side
    20,392,201.82x = 328,898,057,128,487.31
  5. Step 5: Solve for x
    x = 328,898,057,128,487.31/20,392,201.82
  6. Step 6: Final answer
    x = 16,128,619.17

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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.