Home / 20,685,399.32-28,545,265.68-11,265,976.82

Finding the Fourth Proportional to 20,685,399.32, 28,545,265.68 and 11,265,976.82

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Solution

The fourth proportional to 20,685,399.32, 28,545,265.68 and 11,265,976.82 is: 15,546,729.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685,399.32 : 28,545,265.68 = 11,265,976.82 : x
  2. Step 2: Convert to fraction form
    20,685,399.32/28,545,265.68 = 11,265,976.82/x
  3. Step 3: Cross multiply
    20,685,399.32x = 28,545,265.68 × 11,265,976.82
  4. Step 4: Simplify right side
    20,685,399.32x = 321,590,301,471,621.56
  5. Step 5: Solve for x
    x = 321,590,301,471,621.56/20,685,399.32
  6. Step 6: Final answer
    x = 15,546,729.19

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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.