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Finding the Fourth Proportional to 28,863, 43,169.42 and 16,988.47

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Solution

The fourth proportional to 28,863, 43,169.42 and 16,988.47 is: 25,409.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,863 : 43,169.42 = 16,988.47 : x
  2. Step 2: Convert to fraction form
    28,863/43,169.42 = 16,988.47/x
  3. Step 3: Cross multiply
    28,863x = 43,169.42 × 16,988.47
  4. Step 4: Simplify right side
    28,863x = 733,382,331.14
  5. Step 5: Solve for x
    x = 733,382,331.14/28,863
  6. Step 6: Final answer
    x = 25,409.08

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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.