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Finding the Fourth Proportional to 28,167, 38,874.78 and 16,995.48

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Solution

The fourth proportional to 28,167, 38,874.78 and 16,995.48 is: 23,456.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,167 : 38,874.78 = 16,995.48 : x
  2. Step 2: Convert to fraction form
    28,167/38,874.78 = 16,995.48/x
  3. Step 3: Cross multiply
    28,167x = 38,874.78 × 16,995.48
  4. Step 4: Simplify right side
    28,167x = 660,695,545.99
  5. Step 5: Solve for x
    x = 660,695,545.99/28,167
  6. Step 6: Final answer
    x = 23,456.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.