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Finding the Fourth Proportional to 18,005.56, 26,996.64 and 7,472.68

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Solution

The fourth proportional to 18,005.56, 26,996.64 and 7,472.68 is: 11,204.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,005.56 : 26,996.64 = 7,472.68 : x
  2. Step 2: Convert to fraction form
    18,005.56/26,996.64 = 7,472.68/x
  3. Step 3: Cross multiply
    18,005.56x = 26,996.64 × 7,472.68
  4. Step 4: Simplify right side
    18,005.56x = 201,737,251.80
  5. Step 5: Solve for x
    x = 201,737,251.80/18,005.56
  6. Step 6: Final answer
    x = 11,204.16

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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.