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Finding the Fourth Proportional to 30,156, 41,615.32 and 16,726.80

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Solution

The fourth proportional to 30,156, 41,615.32 and 16,726.80 is: 23,083.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156 : 41,615.32 = 16,726.80 : x
  2. Step 2: Convert to fraction form
    30,156/41,615.32 = 16,726.80/x
  3. Step 3: Cross multiply
    30,156x = 41,615.32 × 16,726.80
  4. Step 4: Simplify right side
    30,156x = 696,091,134.58
  5. Step 5: Solve for x
    x = 696,091,134.58/30,156
  6. Step 6: Final answer
    x = 23,083.01

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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.