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Finding the Fourth Proportional to 16,689,097.20, 25,021,690.20 and 6,445,189.20

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Solution

The fourth proportional to 16,689,097.20, 25,021,690.20 and 6,445,189.20 is: 9,663,166.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,689,097.20 : 25,021,690.20 = 6,445,189.20 : x
  2. Step 2: Convert to fraction form
    16,689,097.20/25,021,690.20 = 6,445,189.20/x
  3. Step 3: Cross multiply
    16,689,097.20x = 25,021,690.20 × 6,445,189.20
  4. Step 4: Simplify right side
    16,689,097.20x = 161,269,527,442,785.84
  5. Step 5: Solve for x
    x = 161,269,527,442,785.84/16,689,097.20
  6. Step 6: Final answer
    x = 9,663,166.65

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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.