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Finding the Fourth Proportional to 17,381,985.40, 26,072,978.10 and 10,957,454.20

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Solution

The fourth proportional to 17,381,985.40, 26,072,978.10 and 10,957,454.20 is: 16,436,181.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,381,985.40 : 26,072,978.10 = 10,957,454.20 : x
  2. Step 2: Convert to fraction form
    17,381,985.40/26,072,978.10 = 10,957,454.20/x
  3. Step 3: Cross multiply
    17,381,985.40x = 26,072,978.10 × 10,957,454.20
  4. Step 4: Simplify right side
    17,381,985.40x = 285,693,463,388,353
  5. Step 5: Solve for x
    x = 285,693,463,388,353/17,381,985.40
  6. Step 6: Final answer
    x = 16,436,181.30

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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.