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Finding the Fourth Proportional to 20,250.84, 30,356.10 and 14,081.88

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Solution

The fourth proportional to 20,250.84, 30,356.10 and 14,081.88 is: 21,108.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.84 : 30,356.10 = 14,081.88 : x
  2. Step 2: Convert to fraction form
    20,250.84/30,356.10 = 14,081.88/x
  3. Step 3: Cross multiply
    20,250.84x = 30,356.10 × 14,081.88
  4. Step 4: Simplify right side
    20,250.84x = 427,470,957.47
  5. Step 5: Solve for x
    x = 427,470,957.47/20,250.84
  6. Step 6: Final answer
    x = 21,108.80

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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.