Home / 11,231.07-15,500.21-6,515.52

Finding the Fourth Proportional to 11,231.07, 15,500.21 and 6,515.52

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Solution

The fourth proportional to 11,231.07, 15,500.21 and 6,515.52 is: 8,992.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,231.07 : 15,500.21 = 6,515.52 : x
  2. Step 2: Convert to fraction form
    11,231.07/15,500.21 = 6,515.52/x
  3. Step 3: Cross multiply
    11,231.07x = 15,500.21 × 6,515.52
  4. Step 4: Simplify right side
    11,231.07x = 100,991,928.26
  5. Step 5: Solve for x
    x = 100,991,928.26/11,231.07
  6. Step 6: Final answer
    x = 8,992.19

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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.