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Finding the Fourth Proportional to 18,017.64, 27,036.18 and 6,931.98

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Solution

The fourth proportional to 18,017.64, 27,036.18 and 6,931.98 is: 10,401.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,017.64 : 27,036.18 = 6,931.98 : x
  2. Step 2: Convert to fraction form
    18,017.64/27,036.18 = 6,931.98/x
  3. Step 3: Cross multiply
    18,017.64x = 27,036.18 × 6,931.98
  4. Step 4: Simplify right side
    18,017.64x = 187,414,259.04
  5. Step 5: Solve for x
    x = 187,414,259.04/18,017.64
  6. Step 6: Final answer
    x = 10,401.71

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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.