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Finding the Fourth Proportional to 18,581.33, 27,860.13 and 12,248.89

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Solution

The fourth proportional to 18,581.33, 27,860.13 and 12,248.89 is: 18,365.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.33 : 27,860.13 = 12,248.89 : x
  2. Step 2: Convert to fraction form
    18,581.33/27,860.13 = 12,248.89/x
  3. Step 3: Cross multiply
    18,581.33x = 27,860.13 × 12,248.89
  4. Step 4: Simplify right side
    18,581.33x = 341,255,667.76
  5. Step 5: Solve for x
    x = 341,255,667.76/18,581.33
  6. Step 6: Final answer
    x = 18,365.51

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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.