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Finding the Fourth Proportional to 18,130.92, 27,207.90 and 7,742.76

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Solution

The fourth proportional to 18,130.92, 27,207.90 and 7,742.76 is: 11,619.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,130.92 : 27,207.90 = 7,742.76 : x
  2. Step 2: Convert to fraction form
    18,130.92/27,207.90 = 7,742.76/x
  3. Step 3: Cross multiply
    18,130.92x = 27,207.90 × 7,742.76
  4. Step 4: Simplify right side
    18,130.92x = 210,664,239.80
  5. Step 5: Solve for x
    x = 210,664,239.80/18,130.92
  6. Step 6: Final answer
    x = 11,619.06

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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.