Home / 20,685,400.32-28,545,267.06-11,265,977.82

Finding the Fourth Proportional to 20,685,400.32, 28,545,267.06 and 11,265,977.82

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Solution

The fourth proportional to 20,685,400.32, 28,545,267.06 and 11,265,977.82 is: 15,546,730.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685,400.32 : 28,545,267.06 = 11,265,977.82 : x
  2. Step 2: Convert to fraction form
    20,685,400.32/28,545,267.06 = 11,265,977.82/x
  3. Step 3: Cross multiply
    20,685,400.32x = 28,545,267.06 × 11,265,977.82
  4. Step 4: Simplify right side
    20,685,400.32x = 321,590,345,563,936.62
  5. Step 5: Solve for x
    x = 321,590,345,563,936.62/20,685,400.32
  6. Step 6: Final answer
    x = 15,546,730.57

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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.