Home / 21,680,109.68-29,918,698.92-11,890,623.83

Finding the Fourth Proportional to 21,680,109.68, 29,918,698.92 and 11,890,623.83

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Solution

The fourth proportional to 21,680,109.68, 29,918,698.92 and 11,890,623.83 is: 16,409,141.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680,109.68 : 29,918,698.92 = 11,890,623.83 : x
  2. Step 2: Convert to fraction form
    21,680,109.68/29,918,698.92 = 11,890,623.83/x
  3. Step 3: Cross multiply
    21,680,109.68x = 29,918,698.92 × 11,890,623.83
  4. Step 4: Simplify right side
    21,680,109.68x = 355,751,994,191,153.75
  5. Step 5: Solve for x
    x = 355,751,994,191,153.75/21,680,109.68
  6. Step 6: Final answer
    x = 16,409,141.81

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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.