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Finding the Fourth Proportional to 18,503.20, 27,711.60 and 14,096.80

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Solution

The fourth proportional to 18,503.20, 27,711.60 and 14,096.80 is: 21,112.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,503.20 : 27,711.60 = 14,096.80 : x
  2. Step 2: Convert to fraction form
    18,503.20/27,711.60 = 14,096.80/x
  3. Step 3: Cross multiply
    18,503.20x = 27,711.60 × 14,096.80
  4. Step 4: Simplify right side
    18,503.20x = 390,644,882.88
  5. Step 5: Solve for x
    x = 390,644,882.88/18,503.20
  6. Step 6: Final answer
    x = 21,112.29

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1.5x scale

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.