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Finding the Fourth Proportional to 29,155.71, 43,726.26 and 8,379.21

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Solution

The fourth proportional to 29,155.71, 43,726.26 and 8,379.21 is: 12,566.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,155.71 : 43,726.26 = 8,379.21 : x
  2. Step 2: Convert to fraction form
    29,155.71/43,726.26 = 8,379.21/x
  3. Step 3: Cross multiply
    29,155.71x = 43,726.26 × 8,379.21
  4. Step 4: Simplify right side
    29,155.71x = 366,391,515.05
  5. Step 5: Solve for x
    x = 366,391,515.05/29,155.71
  6. Step 6: Final answer
    x = 12,566.72

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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.