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Finding the Fourth Proportional to 18,202.28, 25,118.88 and 10,243.88

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Solution

The fourth proportional to 18,202.28, 25,118.88 and 10,243.88 is: 14,136.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,202.28 : 25,118.88 = 10,243.88 : x
  2. Step 2: Convert to fraction form
    18,202.28/25,118.88 = 10,243.88/x
  3. Step 3: Cross multiply
    18,202.28x = 25,118.88 × 10,243.88
  4. Step 4: Simplify right side
    18,202.28x = 257,314,792.45
  5. Step 5: Solve for x
    x = 257,314,792.45/18,202.28
  6. Step 6: Final answer
    x = 14,136.40

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1.5x scale

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.