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Finding the Fourth Proportional to 12,672,003.80, 19,008,005.70 and 4,696,938.20

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Solution

The fourth proportional to 12,672,003.80, 19,008,005.70 and 4,696,938.20 is: 7,045,407.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,672,003.80 : 19,008,005.70 = 4,696,938.20 : x
  2. Step 2: Convert to fraction form
    12,672,003.80/19,008,005.70 = 4,696,938.20/x
  3. Step 3: Cross multiply
    12,672,003.80x = 19,008,005.70 × 4,696,938.20
  4. Step 4: Simplify right side
    12,672,003.80x = 89,279,428,078,147.73
  5. Step 5: Solve for x
    x = 89,279,428,078,147.73/12,672,003.80
  6. Step 6: Final answer
    x = 7,045,407.30

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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.