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Finding the Fourth Proportional to 18,890,433.41, 28,335,808.85 and 5,244,643.82

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Solution

The fourth proportional to 18,890,433.41, 28,335,808.85 and 5,244,643.82 is: 7,867,009.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890,433.41 : 28,335,808.85 = 5,244,643.82 : x
  2. Step 2: Convert to fraction form
    18,890,433.41/28,335,808.85 = 5,244,643.82/x
  3. Step 3: Cross multiply
    18,890,433.41x = 28,335,808.85 × 5,244,643.82
  4. Step 4: Simplify right side
    18,890,433.41x = 148,611,224,601,951.56
  5. Step 5: Solve for x
    x = 148,611,224,601,951.56/18,890,433.41
  6. Step 6: Final answer
    x = 7,867,009.79

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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.