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Finding the Fourth Proportional to 11,486,978.10, 15,852,032.69 and 6,259,987.82

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Solution

The fourth proportional to 11,486,978.10, 15,852,032.69 and 6,259,987.82 is: 8,638,784.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,486,978.10 : 15,852,032.69 = 6,259,987.82 : x
  2. Step 2: Convert to fraction form
    11,486,978.10/15,852,032.69 = 6,259,987.82/x
  3. Step 3: Cross multiply
    11,486,978.10x = 15,852,032.69 × 6,259,987.82
  4. Step 4: Simplify right side
    11,486,978.10x = 99,233,531,451,081.75
  5. Step 5: Solve for x
    x = 99,233,531,451,081.75/11,486,978.10
  6. Step 6: Final answer
    x = 8,638,784.77

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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.