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Finding the Fourth Proportional to 28,879.64, 43,303.26 and 14,057

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Solution

The fourth proportional to 28,879.64, 43,303.26 and 14,057 is: 21,077.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,879.64 : 43,303.26 = 14,057 : x
  2. Step 2: Convert to fraction form
    28,879.64/43,303.26 = 14,057/x
  3. Step 3: Cross multiply
    28,879.64x = 43,303.26 × 14,057
  4. Step 4: Simplify right side
    28,879.64x = 608,713,925.82
  5. Step 5: Solve for x
    x = 608,713,925.82/28,879.64
  6. Step 6: Final answer
    x = 21,077.61

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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.