Home / 20,710,249.68-28,578,914.96-11,887,662.72

Finding the Fourth Proportional to 20,710,249.68, 28,578,914.96 and 11,887,662.72

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Solution

The fourth proportional to 20,710,249.68, 28,578,914.96 and 11,887,662.72 is: 16,404,268.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710,249.68 : 28,578,914.96 = 11,887,662.72 : x
  2. Step 2: Convert to fraction form
    20,710,249.68/28,578,914.96 = 11,887,662.72/x
  3. Step 3: Cross multiply
    20,710,249.68x = 28,578,914.96 × 11,887,662.72
  4. Step 4: Simplify right side
    20,710,249.68x = 339,736,501,948,042.31
  5. Step 5: Solve for x
    x = 339,736,501,948,042.31/20,710,249.68
  6. Step 6: Final answer
    x = 16,404,268.77

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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.