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Finding the Fourth Proportional to 11,737,985.40, 17,606,978.10 and 8,084,820.60

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Solution

The fourth proportional to 11,737,985.40, 17,606,978.10 and 8,084,820.60 is: 12,127,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,737,985.40 : 17,606,978.10 = 8,084,820.60 : x
  2. Step 2: Convert to fraction form
    11,737,985.40/17,606,978.10 = 8,084,820.60/x
  3. Step 3: Cross multiply
    11,737,985.40x = 17,606,978.10 × 8,084,820.60
  4. Step 4: Simplify right side
    11,737,985.40x = 142,349,259,246,628.88
  5. Step 5: Solve for x
    x = 142,349,259,246,628.88/11,737,985.40
  6. Step 6: Final answer
    x = 12,127,230.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.