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Finding the Fourth Proportional to 18,202.81, 25,124.63 and 11,135.15

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Solution

The fourth proportional to 18,202.81, 25,124.63 and 11,135.15 is: 15,369.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,202.81 : 25,124.63 = 11,135.15 : x
  2. Step 2: Convert to fraction form
    18,202.81/25,124.63 = 11,135.15/x
  3. Step 3: Cross multiply
    18,202.81x = 25,124.63 × 11,135.15
  4. Step 4: Simplify right side
    18,202.81x = 279,766,523.74
  5. Step 5: Solve for x
    x = 279,766,523.74/18,202.81
  6. Step 6: Final answer
    x = 15,369.41

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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.