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Finding the Fourth Proportional to 26,171,978.40, 39,264,188.40 and 11,018,109.60

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Solution

The fourth proportional to 26,171,978.40, 39,264,188.40 and 11,018,109.60 is: 16,529,783.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,171,978.40 : 39,264,188.40 = 11,018,109.60 : x
  2. Step 2: Convert to fraction form
    26,171,978.40/39,264,188.40 = 11,018,109.60/x
  3. Step 3: Cross multiply
    26,171,978.40x = 39,264,188.40 × 11,018,109.60
  4. Step 4: Simplify right side
    26,171,978.40x = 432,617,131,146,248.62
  5. Step 5: Solve for x
    x = 432,617,131,146,248.62/26,171,978.40
  6. Step 6: Final answer
    x = 16,529,783.29

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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.