Home / 21,142,216,992.40-29,177,026,569.66-12,111,720,414.76

Finding the Fourth Proportional to 21,142,216,992.40, 29,177,026,569.66 and 12,111,720,414.76

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Solution

The fourth proportional to 21,142,216,992.40, 29,177,026,569.66 and 12,111,720,414.76 is: 16,714,613,631.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142,216,992.40 : 29,177,026,569.66 = 12,111,720,414.76 : x
  2. Step 2: Convert to fraction form
    21,142,216,992.40/29,177,026,569.66 = 12,111,720,414.76/x
  3. Step 3: Cross multiply
    21,142,216,992.40x = 29,177,026,569.66 × 12,111,720,414.76
  4. Step 4: Simplify right side
    21,142,216,992.40x = 353,383,988,345,745,965,056
  5. Step 5: Solve for x
    x = 353,383,988,345,745,965,056/21,142,216,992.40
  6. Step 6: Final answer
    x = 16,714,613,631.71

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Double scale
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1.5x scale

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.