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Finding the Fourth Proportional to 11,578,351.72, 15,978,150.08 and 6,351,402.86

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Solution

The fourth proportional to 11,578,351.72, 15,978,150.08 and 6,351,402.86 is: 8,764,949.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,578,351.72 : 15,978,150.08 = 6,351,402.86 : x
  2. Step 2: Convert to fraction form
    11,578,351.72/15,978,150.08 = 6,351,402.86/x
  3. Step 3: Cross multiply
    11,578,351.72x = 15,978,150.08 × 6,351,402.86
  4. Step 4: Simplify right side
    11,578,351.72x = 101,483,668,171,445.11
  5. Step 5: Solve for x
    x = 101,483,668,171,445.11/11,578,351.72
  6. Step 6: Final answer
    x = 8,764,949.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.