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Finding the Fourth Proportional to 18,172.98, 27,271.98 and 7,079.76

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Solution

The fourth proportional to 18,172.98, 27,271.98 and 7,079.76 is: 10,624.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,172.98 : 27,271.98 = 7,079.76 : x
  2. Step 2: Convert to fraction form
    18,172.98/27,271.98 = 7,079.76/x
  3. Step 3: Cross multiply
    18,172.98x = 27,271.98 × 7,079.76
  4. Step 4: Simplify right side
    18,172.98x = 193,079,073.12
  5. Step 5: Solve for x
    x = 193,079,073.12/18,172.98
  6. Step 6: Final answer
    x = 10,624.51

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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.