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Finding the Fourth Proportional to 18,845,954.40, 28,274,180.40 and 9,261,645.60

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Solution

The fourth proportional to 18,845,954.40, 28,274,180.40 and 9,261,645.60 is: 13,895,047.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,845,954.40 : 28,274,180.40 = 9,261,645.60 : x
  2. Step 2: Convert to fraction form
    18,845,954.40/28,274,180.40 = 9,261,645.60/x
  3. Step 3: Cross multiply
    18,845,954.40x = 28,274,180.40 × 9,261,645.60
  4. Step 4: Simplify right side
    18,845,954.40x = 261,865,438,495,266.22
  5. Step 5: Solve for x
    x = 261,865,438,495,266.22/18,845,954.40
  6. Step 6: Final answer
    x = 13,895,047.87

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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.