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Finding the Fourth Proportional to 20,178.46, 27,841.12 and 11,223.91

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Solution

The fourth proportional to 20,178.46, 27,841.12 and 11,223.91 is: 15,486.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.46 : 27,841.12 = 11,223.91 : x
  2. Step 2: Convert to fraction form
    20,178.46/27,841.12 = 11,223.91/x
  3. Step 3: Cross multiply
    20,178.46x = 27,841.12 × 11,223.91
  4. Step 4: Simplify right side
    20,178.46x = 312,486,225.18
  5. Step 5: Solve for x
    x = 312,486,225.18/20,178.46
  6. Step 6: Final answer
    x = 15,486.13

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.