Home / 21,213,356,175.09-29,275,138,238.28-11,568,612,377.28

Finding the Fourth Proportional to 21,213,356,175.09, 29,275,138,238.28 and 11,568,612,377.28

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Solution

The fourth proportional to 21,213,356,175.09, 29,275,138,238.28 and 11,568,612,377.28 is: 15,965,070,485.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,213,356,175.09 : 29,275,138,238.28 = 11,568,612,377.28 : x
  2. Step 2: Convert to fraction form
    21,213,356,175.09/29,275,138,238.28 = 11,568,612,377.28/x
  3. Step 3: Cross multiply
    21,213,356,175.09x = 29,275,138,238.28 × 11,568,612,377.28
  4. Step 4: Simplify right side
    21,213,356,175.09x = 338,672,726,569,949,003,776
  5. Step 5: Solve for x
    x = 338,672,726,569,949,003,776/21,213,356,175.09
  6. Step 6: Final answer
    x = 15,965,070,485.53

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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.