Home / 28,802.82-43,170.27-12,989.31

Finding the Fourth Proportional to 28,802.82, 43,170.27 and 12,989.31

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Solution

The fourth proportional to 28,802.82, 43,170.27 and 12,989.31 is: 19,468.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,802.82 : 43,170.27 = 12,989.31 : x
  2. Step 2: Convert to fraction form
    28,802.82/43,170.27 = 12,989.31/x
  3. Step 3: Cross multiply
    28,802.82x = 43,170.27 × 12,989.31
  4. Step 4: Simplify right side
    28,802.82x = 560,752,052.05
  5. Step 5: Solve for x
    x = 560,752,052.05/28,802.82
  6. Step 6: Final answer
    x = 19,468.65

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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.