Home / 19,161.53-28,749.42-8,628.38

Finding the Fourth Proportional to 19,161.53, 28,749.42 and 8,628.38

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Solution

The fourth proportional to 19,161.53, 28,749.42 and 8,628.38 is: 12,945.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,161.53 : 28,749.42 = 8,628.38 : x
  2. Step 2: Convert to fraction form
    19,161.53/28,749.42 = 8,628.38/x
  3. Step 3: Cross multiply
    19,161.53x = 28,749.42 × 8,628.38
  4. Step 4: Simplify right side
    19,161.53x = 248,060,920.54
  5. Step 5: Solve for x
    x = 248,060,920.54/19,161.53
  6. Step 6: Final answer
    x = 12,945.78

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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.