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Finding the Fourth Proportional to 13,951.78, 20,927.57 and 6,556.17

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Solution

The fourth proportional to 13,951.78, 20,927.57 and 6,556.17 is: 9,834.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,951.78 : 20,927.57 = 6,556.17 : x
  2. Step 2: Convert to fraction form
    13,951.78/20,927.57 = 6,556.17/x
  3. Step 3: Cross multiply
    13,951.78x = 20,927.57 × 6,556.17
  4. Step 4: Simplify right side
    13,951.78x = 137,204,752.30
  5. Step 5: Solve for x
    x = 137,204,752.30/13,951.78
  6. Step 6: Final answer
    x = 9,834.21

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1.5x scale

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.