Home / 9,879.24-13,560.76-8,735.12

Finding the Fourth Proportional to 9,879.24, 13,560.76 and 8,735.12

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Solution

The fourth proportional to 9,879.24, 13,560.76 and 8,735.12 is: 11,990.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.24 : 13,560.76 = 8,735.12 : x
  2. Step 2: Convert to fraction form
    9,879.24/13,560.76 = 8,735.12/x
  3. Step 3: Cross multiply
    9,879.24x = 13,560.76 × 8,735.12
  4. Step 4: Simplify right side
    9,879.24x = 118,454,865.89
  5. Step 5: Solve for x
    x = 118,454,865.89/9,879.24
  6. Step 6: Final answer
    x = 11,990.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.