Home / 21,235,204,813.82-31,857,003,318.51-7,789,613,542.92

Finding the Fourth Proportional to 21,235,204,813.82, 31,857,003,318.51 and 7,789,613,542.92

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Solution

The fourth proportional to 21,235,204,813.82, 31,857,003,318.51 and 7,789,613,542.92 is: 11,685,959,549.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235,204,813.82 : 31,857,003,318.51 = 7,789,613,542.92 : x
  2. Step 2: Convert to fraction form
    21,235,204,813.82/31,857,003,318.51 = 7,789,613,542.92/x
  3. Step 3: Cross multiply
    21,235,204,813.82x = 31,857,003,318.51 × 7,789,613,542.92
  4. Step 4: Simplify right side
    21,235,204,813.82x = 248,153,744,486,712,868,864
  5. Step 5: Solve for x
    x = 248,153,744,486,712,868,864/21,235,204,813.82
  6. Step 6: Final answer
    x = 11,685,959,549.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.