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Finding the Fourth Proportional to 11,737,978.40, 17,606,967.60 and 8,084,813.60

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Solution

The fourth proportional to 11,737,978.40, 17,606,967.60 and 8,084,813.60 is: 12,127,220.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,737,978.40 : 17,606,967.60 = 8,084,813.60 : x
  2. Step 2: Convert to fraction form
    11,737,978.40/17,606,967.60 = 8,084,813.60/x
  3. Step 3: Cross multiply
    11,737,978.40x = 17,606,967.60 × 8,084,813.60
  4. Step 4: Simplify right side
    11,737,978.40x = 142,349,051,107,239.38
  5. Step 5: Solve for x
    x = 142,349,051,107,239.38/11,737,978.40
  6. Step 6: Final answer
    x = 12,127,220.40

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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.