Home / 21,105,821.23-31,650,661.68-11,516,074.09

Finding the Fourth Proportional to 21,105,821.23, 31,650,661.68 and 11,516,074.09

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Solution

The fourth proportional to 21,105,821.23, 31,650,661.68 and 11,516,074.09 is: 17,269,707.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105,821.23 : 31,650,661.68 = 11,516,074.09 : x
  2. Step 2: Convert to fraction form
    21,105,821.23/31,650,661.68 = 11,516,074.09/x
  3. Step 3: Cross multiply
    21,105,821.23x = 31,650,661.68 × 11,516,074.09
  4. Step 4: Simplify right side
    21,105,821.23x = 364,491,364,904,403.88
  5. Step 5: Solve for x
    x = 364,491,364,904,403.88/21,105,821.23
  6. Step 6: Final answer
    x = 17,269,707.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.