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Finding the Fourth Proportional to 18,000.42, 26,964.81 and 10,971.78

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Solution

The fourth proportional to 18,000.42, 26,964.81 and 10,971.78 is: 16,435.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,000.42 : 26,964.81 = 10,971.78 : x
  2. Step 2: Convert to fraction form
    18,000.42/26,964.81 = 10,971.78/x
  3. Step 3: Cross multiply
    18,000.42x = 26,964.81 × 10,971.78
  4. Step 4: Simplify right side
    18,000.42x = 295,851,963.06
  5. Step 5: Solve for x
    x = 295,851,963.06/18,000.42
  6. Step 6: Final answer
    x = 16,435.84

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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.