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Finding the Fourth Proportional to 18,181, 25,094.28 and 11,113.39

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Solution

The fourth proportional to 18,181, 25,094.28 and 11,113.39 is: 15,339.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,181 : 25,094.28 = 11,113.39 : x
  2. Step 2: Convert to fraction form
    18,181/25,094.28 = 11,113.39/x
  3. Step 3: Cross multiply
    18,181x = 25,094.28 × 11,113.39
  4. Step 4: Simplify right side
    18,181x = 278,882,520.41
  5. Step 5: Solve for x
    x = 278,882,520.41/18,181
  6. Step 6: Final answer
    x = 15,339.23

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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.