Home / 18,421.08-27,623.97-11,390.79

Finding the Fourth Proportional to 18,421.08, 27,623.97 and 11,390.79

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Solution

The fourth proportional to 18,421.08, 27,623.97 and 11,390.79 is: 17,081.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.08 : 27,623.97 = 11,390.79 : x
  2. Step 2: Convert to fraction form
    18,421.08/27,623.97 = 11,390.79/x
  3. Step 3: Cross multiply
    18,421.08x = 27,623.97 × 11,390.79
  4. Step 4: Simplify right side
    18,421.08x = 314,658,841.24
  5. Step 5: Solve for x
    x = 314,658,841.24/18,421.08
  6. Step 6: Final answer
    x = 17,081.45

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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.