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Finding the Fourth Proportional to 13,807,978, 20,712,261.84 and 3,573,057.76

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Solution

The fourth proportional to 13,807,978, 20,712,261.84 and 3,573,057.76 is: 5,359,662.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807,978 : 20,712,261.84 = 3,573,057.76 : x
  2. Step 2: Convert to fraction form
    13,807,978/20,712,261.84 = 3,573,057.76/x
  3. Step 3: Cross multiply
    13,807,978x = 20,712,261.84 × 3,573,057.76
  4. Step 4: Simplify right side
    13,807,978x = 74,006,107,894,563.88
  5. Step 5: Solve for x
    x = 74,006,107,894,563.88/13,807,978
  6. Step 6: Final answer
    x = 5,359,662.94

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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.