Home / 28,965.92-43,380.72-14,128.28

Finding the Fourth Proportional to 28,965.92, 43,380.72 and 14,128.28

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Solution

The fourth proportional to 28,965.92, 43,380.72 and 14,128.28 is: 21,159.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965.92 : 43,380.72 = 14,128.28 : x
  2. Step 2: Convert to fraction form
    28,965.92/43,380.72 = 14,128.28/x
  3. Step 3: Cross multiply
    28,965.92x = 43,380.72 × 14,128.28
  4. Step 4: Simplify right side
    28,965.92x = 612,894,958.76
  5. Step 5: Solve for x
    x = 612,894,958.76/28,965.92
  6. Step 6: Final answer
    x = 21,159.17

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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.