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Finding the Fourth Proportional to 14,978,991.66, 20,670,958.11 and 8,103,475.54

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Solution

The fourth proportional to 14,978,991.66, 20,670,958.11 and 8,103,475.54 is: 11,182,768.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,978,991.66 : 20,670,958.11 = 8,103,475.54 : x
  2. Step 2: Convert to fraction form
    14,978,991.66/20,670,958.11 = 8,103,475.54/x
  3. Step 3: Cross multiply
    14,978,991.66x = 20,670,958.11 × 8,103,475.54
  4. Step 4: Simplify right side
    14,978,991.66x = 167,506,603,432,749.62
  5. Step 5: Solve for x
    x = 167,506,603,432,749.62/14,978,991.66
  6. Step 6: Final answer
    x = 11,182,768.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.