Home / 28,731.54-39,649.10-16,156.28

Finding the Fourth Proportional to 28,731.54, 39,649.10 and 16,156.28

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Solution

The fourth proportional to 28,731.54, 39,649.10 and 16,156.28 is: 22,295.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,731.54 : 39,649.10 = 16,156.28 : x
  2. Step 2: Convert to fraction form
    28,731.54/39,649.10 = 16,156.28/x
  3. Step 3: Cross multiply
    28,731.54x = 39,649.10 × 16,156.28
  4. Step 4: Simplify right side
    28,731.54x = 640,581,961.35
  5. Step 5: Solve for x
    x = 640,581,961.35/28,731.54
  6. Step 6: Final answer
    x = 22,295.43

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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.