Home / 12,749.70-19,124.55-3,984.57

Finding the Fourth Proportional to 12,749.70, 19,124.55 and 3,984.57

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Solution

The fourth proportional to 12,749.70, 19,124.55 and 3,984.57 is: 5,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.70 : 19,124.55 = 3,984.57 : x
  2. Step 2: Convert to fraction form
    12,749.70/19,124.55 = 3,984.57/x
  3. Step 3: Cross multiply
    12,749.70x = 19,124.55 × 3,984.57
  4. Step 4: Simplify right side
    12,749.70x = 76,203,108.19
  5. Step 5: Solve for x
    x = 76,203,108.19/12,749.70
  6. Step 6: Final answer
    x = 5,976.86

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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.