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Finding the Fourth Proportional to 18,181.78, 25,084.82 and 14,818.82

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Solution

The fourth proportional to 18,181.78, 25,084.82 and 14,818.82 is: 20,445.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,181.78 : 25,084.82 = 14,818.82 : x
  2. Step 2: Convert to fraction form
    18,181.78/25,084.82 = 14,818.82/x
  3. Step 3: Cross multiply
    18,181.78x = 25,084.82 × 14,818.82
  4. Step 4: Simplify right side
    18,181.78x = 371,727,343.94
  5. Step 5: Solve for x
    x = 371,727,343.94/18,181.78
  6. Step 6: Final answer
    x = 20,445.05

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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.