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Finding the Fourth Proportional to 18,672,922.40, 28,009,383.60 and 11,498,468.90

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Solution

The fourth proportional to 18,672,922.40, 28,009,383.60 and 11,498,468.90 is: 17,247,703.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672,922.40 : 28,009,383.60 = 11,498,468.90 : x
  2. Step 2: Convert to fraction form
    18,672,922.40/28,009,383.60 = 11,498,468.90/x
  3. Step 3: Cross multiply
    18,672,922.40x = 28,009,383.60 × 11,498,468.90
  4. Step 4: Simplify right side
    18,672,922.40x = 322,065,026,232,770.06
  5. Step 5: Solve for x
    x = 322,065,026,232,770.06/18,672,922.40
  6. Step 6: Final answer
    x = 17,247,703.35

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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.