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Finding the Fourth Proportional to 16,691,811.20, 25,025,761.20 and 6,447,903.20

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Solution

The fourth proportional to 16,691,811.20, 25,025,761.20 and 6,447,903.20 is: 9,667,236.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,691,811.20 : 25,025,761.20 = 6,447,903.20 : x
  2. Step 2: Convert to fraction form
    16,691,811.20/25,025,761.20 = 6,447,903.20/x
  3. Step 3: Cross multiply
    16,691,811.20x = 25,025,761.20 × 6,447,903.20
  4. Step 4: Simplify right side
    16,691,811.20x = 161,363,685,723,915.84
  5. Step 5: Solve for x
    x = 161,363,685,723,915.84/16,691,811.20
  6. Step 6: Final answer
    x = 9,667,236.45

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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.