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Finding the Fourth Proportional to 17,991,864.72, 26,987,764.14 and 5,861,313.90

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Solution

The fourth proportional to 17,991,864.72, 26,987,764.14 and 5,861,313.90 is: 8,791,960.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991,864.72 : 26,987,764.14 = 5,861,313.90 : x
  2. Step 2: Convert to fraction form
    17,991,864.72/26,987,764.14 = 5,861,313.90/x
  3. Step 3: Cross multiply
    17,991,864.72x = 26,987,764.14 × 5,861,313.90
  4. Step 4: Simplify right side
    17,991,864.72x = 158,183,757,083,703.56
  5. Step 5: Solve for x
    x = 158,183,757,083,703.56/17,991,864.72
  6. Step 6: Final answer
    x = 8,791,960.12

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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.