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Finding the Fourth Proportional to 18,001.56, 26,990.64 and 7,468.68

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Solution

The fourth proportional to 18,001.56, 26,990.64 and 7,468.68 is: 11,198.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,001.56 : 26,990.64 = 7,468.68 : x
  2. Step 2: Convert to fraction form
    18,001.56/26,990.64 = 7,468.68/x
  3. Step 3: Cross multiply
    18,001.56x = 26,990.64 × 7,468.68
  4. Step 4: Simplify right side
    18,001.56x = 201,584,453.16
  5. Step 5: Solve for x
    x = 201,584,453.16/18,001.56
  6. Step 6: Final answer
    x = 11,198.17

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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.