Home / 10,117.45-13,961.57-5,640.33

Finding the Fourth Proportional to 10,117.45, 13,961.57 and 5,640.33

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Solution

The fourth proportional to 10,117.45, 13,961.57 and 5,640.33 is: 7,783.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,117.45 : 13,961.57 = 5,640.33 : x
  2. Step 2: Convert to fraction form
    10,117.45/13,961.57 = 5,640.33/x
  3. Step 3: Cross multiply
    10,117.45x = 13,961.57 × 5,640.33
  4. Step 4: Simplify right side
    10,117.45x = 78,747,833.92
  5. Step 5: Solve for x
    x = 78,747,833.92/10,117.45
  6. Step 6: Final answer
    x = 7,783.37

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1.5x scale

Why These Related Problems?

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