Home / 20,947,491.68-28,907,189.89-11,654,964.32

Finding the Fourth Proportional to 20,947,491.68, 28,907,189.89 and 11,654,964.32

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Solution

The fourth proportional to 20,947,491.68, 28,907,189.89 and 11,654,964.32 is: 16,083,656.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947,491.68 : 28,907,189.89 = 11,654,964.32 : x
  2. Step 2: Convert to fraction form
    20,947,491.68/28,907,189.89 = 11,654,964.32/x
  3. Step 3: Cross multiply
    20,947,491.68x = 28,907,189.89 × 11,654,964.32
  4. Step 4: Simplify right side
    20,947,491.68x = 336,912,266,585,741.31
  5. Step 5: Solve for x
    x = 336,912,266,585,741.31/20,947,491.68
  6. Step 6: Final answer
    x = 16,083,656.78

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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.