Home / 20,386,074.54-28,132,786.98-11,218,717.29

Finding the Fourth Proportional to 20,386,074.54, 28,132,786.98 and 11,218,717.29

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Solution

The fourth proportional to 20,386,074.54, 28,132,786.98 and 11,218,717.29 is: 15,481,832.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,074.54 : 28,132,786.98 = 11,218,717.29 : x
  2. Step 2: Convert to fraction form
    20,386,074.54/28,132,786.98 = 11,218,717.29/x
  3. Step 3: Cross multiply
    20,386,074.54x = 28,132,786.98 × 11,218,717.29
  4. Step 4: Simplify right side
    20,386,074.54x = 315,613,783,708,412.88
  5. Step 5: Solve for x
    x = 315,613,783,708,412.88/20,386,074.54
  6. Step 6: Final answer
    x = 15,481,832.12

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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.