Home / 9,431.45-13,015.94-5,239.70

Finding the Fourth Proportional to 9,431.45, 13,015.94 and 5,239.70

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Solution

The fourth proportional to 9,431.45, 13,015.94 and 5,239.70 is: 7,231.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,431.45 : 13,015.94 = 5,239.70 : x
  2. Step 2: Convert to fraction form
    9,431.45/13,015.94 = 5,239.70/x
  3. Step 3: Cross multiply
    9,431.45x = 13,015.94 × 5,239.70
  4. Step 4: Simplify right side
    9,431.45x = 68,199,529.54
  5. Step 5: Solve for x
    x = 68,199,529.54/9,431.45
  6. Step 6: Final answer
    x = 7,231.08

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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.