Home / 12,648.45-18,974.72-4,751.57

Finding the Fourth Proportional to 12,648.45, 18,974.72 and 4,751.57

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Solution

The fourth proportional to 12,648.45, 18,974.72 and 4,751.57 is: 7,128.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,648.45 : 18,974.72 = 4,751.57 : x
  2. Step 2: Convert to fraction form
    12,648.45/18,974.72 = 4,751.57/x
  3. Step 3: Cross multiply
    12,648.45x = 18,974.72 × 4,751.57
  4. Step 4: Simplify right side
    12,648.45x = 90,159,591.68
  5. Step 5: Solve for x
    x = 90,159,591.68/12,648.45
  6. Step 6: Final answer
    x = 7,128.11

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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.