Home / 20,489,841.72-28,275,991.68-11,322,484.50

Finding the Fourth Proportional to 20,489,841.72, 28,275,991.68 and 11,322,484.50

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Solution

The fourth proportional to 20,489,841.72, 28,275,991.68 and 11,322,484.50 is: 15,625,034.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489,841.72 : 28,275,991.68 = 11,322,484.50 : x
  2. Step 2: Convert to fraction form
    20,489,841.72/28,275,991.68 = 11,322,484.50/x
  3. Step 3: Cross multiply
    20,489,841.72x = 28,275,991.68 × 11,322,484.50
  4. Step 4: Simplify right side
    20,489,841.72x = 320,154,477,518,928.94
  5. Step 5: Solve for x
    x = 320,154,477,518,928.94/20,489,841.72
  6. Step 6: Final answer
    x = 15,625,034.19

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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.