Home / 28,919.04-43,365.12-14,128.64

Finding the Fourth Proportional to 28,919.04, 43,365.12 and 14,128.64

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Solution

The fourth proportional to 28,919.04, 43,365.12 and 14,128.64 is: 21,186.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.04 : 43,365.12 = 14,128.64 : x
  2. Step 2: Convert to fraction form
    28,919.04/43,365.12 = 14,128.64/x
  3. Step 3: Cross multiply
    28,919.04x = 43,365.12 × 14,128.64
  4. Step 4: Simplify right side
    28,919.04x = 612,690,169.04
  5. Step 5: Solve for x
    x = 612,690,169.04/28,919.04
  6. Step 6: Final answer
    x = 21,186.39

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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.