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Finding the Fourth Proportional to 15,552,486.70, 23,287,906.05 and 10,978,837.90

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Solution

The fourth proportional to 15,552,486.70, 23,287,906.05 and 10,978,837.90 is: 16,439,438.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,552,486.70 : 23,287,906.05 = 10,978,837.90 : x
  2. Step 2: Convert to fraction form
    15,552,486.70/23,287,906.05 = 10,978,837.90/x
  3. Step 3: Cross multiply
    15,552,486.70x = 23,287,906.05 × 10,978,837.90
  4. Step 4: Simplify right side
    15,552,486.70x = 255,674,145,553,379.31
  5. Step 5: Solve for x
    x = 255,674,145,553,379.31/15,552,486.70
  6. Step 6: Final answer
    x = 16,439,438.30

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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.