Home / 21,407,920.56-29,538,656.64-13,029,678.48

Finding the Fourth Proportional to 21,407,920.56, 29,538,656.64 and 13,029,678.48

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Solution

The fourth proportional to 21,407,920.56, 29,538,656.64 and 13,029,678.48 is: 17,978,355.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,407,920.56 : 29,538,656.64 = 13,029,678.48 : x
  2. Step 2: Convert to fraction form
    21,407,920.56/29,538,656.64 = 13,029,678.48/x
  3. Step 3: Cross multiply
    21,407,920.56x = 29,538,656.64 × 13,029,678.48
  4. Step 4: Simplify right side
    21,407,920.56x = 384,879,198,750,317.12
  5. Step 5: Solve for x
    x = 384,879,198,750,317.12/21,407,920.56
  6. Step 6: Final answer
    x = 17,978,355.15

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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.