Home / 18,231.12-27,369.36-12,719.52

Finding the Fourth Proportional to 18,231.12, 27,369.36 and 12,719.52

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Solution

The fourth proportional to 18,231.12, 27,369.36 and 12,719.52 is: 19,095.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.12 : 27,369.36 = 12,719.52 : x
  2. Step 2: Convert to fraction form
    18,231.12/27,369.36 = 12,719.52/x
  3. Step 3: Cross multiply
    18,231.12x = 27,369.36 × 12,719.52
  4. Step 4: Simplify right side
    18,231.12x = 348,125,121.91
  5. Step 5: Solve for x
    x = 348,125,121.91/18,231.12
  6. Step 6: Final answer
    x = 19,095.10

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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.