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Finding the Fourth Proportional to 28,951.56, 39,953.82 and 16,377

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Solution

The fourth proportional to 28,951.56, 39,953.82 and 16,377 is: 22,600.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,951.56 : 39,953.82 = 16,377 : x
  2. Step 2: Convert to fraction form
    28,951.56/39,953.82 = 16,377/x
  3. Step 3: Cross multiply
    28,951.56x = 39,953.82 × 16,377
  4. Step 4: Simplify right side
    28,951.56x = 654,323,710.14
  5. Step 5: Solve for x
    x = 654,323,710.14/28,951.56
  6. Step 6: Final answer
    x = 22,600.64

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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.