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Finding the Fourth Proportional to 18,013.77, 27,001.89 and 7,489.50

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Solution

The fourth proportional to 18,013.77, 27,001.89 and 7,489.50 is: 11,226.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,013.77 : 27,001.89 = 7,489.50 : x
  2. Step 2: Convert to fraction form
    18,013.77/27,001.89 = 7,489.50/x
  3. Step 3: Cross multiply
    18,013.77x = 27,001.89 × 7,489.50
  4. Step 4: Simplify right side
    18,013.77x = 202,230,655.16
  5. Step 5: Solve for x
    x = 202,230,655.16/18,013.77
  6. Step 6: Final answer
    x = 11,226.45

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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.