Home / 27,781.12-41,688.96-12,211.84

Finding the Fourth Proportional to 27,781.12, 41,688.96 and 12,211.84

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Solution

The fourth proportional to 27,781.12, 41,688.96 and 12,211.84 is: 18,325.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.12 : 41,688.96 = 12,211.84 : x
  2. Step 2: Convert to fraction form
    27,781.12/41,688.96 = 12,211.84/x
  3. Step 3: Cross multiply
    27,781.12x = 41,688.96 × 12,211.84
  4. Step 4: Simplify right side
    27,781.12x = 509,098,909.29
  5. Step 5: Solve for x
    x = 509,098,909.29/27,781.12
  6. Step 6: Final answer
    x = 18,325.36

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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.