Home / 9,515.50-13,131.45-5,323.75

Finding the Fourth Proportional to 9,515.50, 13,131.45 and 5,323.75

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Solution

The fourth proportional to 9,515.50, 13,131.45 and 5,323.75 is: 7,346.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,515.50 : 13,131.45 = 5,323.75 : x
  2. Step 2: Convert to fraction form
    9,515.50/13,131.45 = 5,323.75/x
  3. Step 3: Cross multiply
    9,515.50x = 13,131.45 × 5,323.75
  4. Step 4: Simplify right side
    9,515.50x = 69,908,556.94
  5. Step 5: Solve for x
    x = 69,908,556.94/9,515.50
  6. Step 6: Final answer
    x = 7,346.81

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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.