Home / 21,235,204,815.32-31,857,003,320.76-7,789,613,544.42

Finding the Fourth Proportional to 21,235,204,815.32, 31,857,003,320.76 and 7,789,613,544.42

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Solution

The fourth proportional to 21,235,204,815.32, 31,857,003,320.76 and 7,789,613,544.42 is: 11,685,959,552.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235,204,815.32 : 31,857,003,320.76 = 7,789,613,544.42 : x
  2. Step 2: Convert to fraction form
    21,235,204,815.32/31,857,003,320.76 = 7,789,613,544.42/x
  3. Step 3: Cross multiply
    21,235,204,815.32x = 31,857,003,320.76 × 7,789,613,544.42
  4. Step 4: Simplify right side
    21,235,204,815.32x = 248,153,744,552,024,997,888
  5. Step 5: Solve for x
    x = 248,153,744,552,024,997,888/21,235,204,815.32
  6. Step 6: Final answer
    x = 11,685,959,552.08

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1.5x scale

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.