Home / 21,051,993.65-29,040,869.49-13,321,520.30

Finding the Fourth Proportional to 21,051,993.65, 29,040,869.49 and 13,321,520.30

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Solution

The fourth proportional to 21,051,993.65, 29,040,869.49 and 13,321,520.30 is: 18,376,812.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051,993.65 : 29,040,869.49 = 13,321,520.30 : x
  2. Step 2: Convert to fraction form
    21,051,993.65/29,040,869.49 = 13,321,520.30/x
  3. Step 3: Cross multiply
    21,051,993.65x = 29,040,869.49 × 13,321,520.30
  4. Step 4: Simplify right side
    21,051,993.65x = 386,868,532,295,481.25
  5. Step 5: Solve for x
    x = 386,868,532,295,481.25/21,051,993.65
  6. Step 6: Final answer
    x = 18,376,812.14

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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.