Home / 21,563,435,746.18-29,759,081,188.69-11,917,958,218.30

Finding the Fourth Proportional to 21,563,435,746.18, 29,759,081,188.69 and 11,917,958,218.30

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Solution

The fourth proportional to 21,563,435,746.18, 29,759,081,188.69 and 11,917,958,218.30 is: 16,447,633,410.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,563,435,746.18 : 29,759,081,188.69 = 11,917,958,218.30 : x
  2. Step 2: Convert to fraction form
    21,563,435,746.18/29,759,081,188.69 = 11,917,958,218.30/x
  3. Step 3: Cross multiply
    21,563,435,746.18x = 29,759,081,188.69 × 11,917,958,218.30
  4. Step 4: Simplify right side
    21,563,435,746.18x = 354,667,486,221,804,896,256
  5. Step 5: Solve for x
    x = 354,667,486,221,804,896,256/21,563,435,746.18
  6. Step 6: Final answer
    x = 16,447,633,410.40

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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.