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Finding the Fourth Proportional to 9,930.16, 14,899.10 and 4,379.56

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Solution

The fourth proportional to 9,930.16, 14,899.10 and 4,379.56 is: 6,571.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,930.16 : 14,899.10 = 4,379.56 : x
  2. Step 2: Convert to fraction form
    9,930.16/14,899.10 = 4,379.56/x
  3. Step 3: Cross multiply
    9,930.16x = 14,899.10 × 4,379.56
  4. Step 4: Simplify right side
    9,930.16x = 65,251,502.40
  5. Step 5: Solve for x
    x = 65,251,502.40/9,930.16
  6. Step 6: Final answer
    x = 6,571.04

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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.