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Finding the Fourth Proportional to 18,002.62, 26,992.38 and 7,479.91

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Solution

The fourth proportional to 18,002.62, 26,992.38 and 7,479.91 is: 11,215.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,002.62 : 26,992.38 = 7,479.91 : x
  2. Step 2: Convert to fraction form
    18,002.62/26,992.38 = 7,479.91/x
  3. Step 3: Cross multiply
    18,002.62x = 26,992.38 × 7,479.91
  4. Step 4: Simplify right side
    18,002.62x = 201,900,573.09
  5. Step 5: Solve for x
    x = 201,900,573.09/18,002.62
  6. Step 6: Final answer
    x = 11,215.07

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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.