Home / 20,914,485.93-28,857,261.76-12,654,342.79

Finding the Fourth Proportional to 20,914,485.93, 28,857,261.76 and 12,654,342.79

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Solution

The fourth proportional to 20,914,485.93, 28,857,261.76 and 12,654,342.79 is: 17,460,131.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914,485.93 : 28,857,261.76 = 12,654,342.79 : x
  2. Step 2: Convert to fraction form
    20,914,485.93/28,857,261.76 = 12,654,342.79/x
  3. Step 3: Cross multiply
    20,914,485.93x = 28,857,261.76 × 12,654,342.79
  4. Step 4: Simplify right side
    20,914,485.93x = 365,169,682,188,019.69
  5. Step 5: Solve for x
    x = 365,169,682,188,019.69/20,914,485.93
  6. Step 6: Final answer
    x = 17,460,131.86

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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.