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Finding the Fourth Proportional to 18,655.38, 27,983.07 and 6,172.06

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Solution

The fourth proportional to 18,655.38, 27,983.07 and 6,172.06 is: 9,258.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.38 : 27,983.07 = 6,172.06 : x
  2. Step 2: Convert to fraction form
    18,655.38/27,983.07 = 6,172.06/x
  3. Step 3: Cross multiply
    18,655.38x = 27,983.07 × 6,172.06
  4. Step 4: Simplify right side
    18,655.38x = 172,713,187.02
  5. Step 5: Solve for x
    x = 172,713,187.02/18,655.38
  6. Step 6: Final answer
    x = 9,258.09

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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.