Home / 15,025.95-20,735.69-8,311.50

Finding the Fourth Proportional to 15,025.95, 20,735.69 and 8,311.50

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Solution

The fourth proportional to 15,025.95, 20,735.69 and 8,311.50 is: 11,469.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.95 : 20,735.69 = 8,311.50 : x
  2. Step 2: Convert to fraction form
    15,025.95/20,735.69 = 8,311.50/x
  3. Step 3: Cross multiply
    15,025.95x = 20,735.69 × 8,311.50
  4. Step 4: Simplify right side
    15,025.95x = 172,344,645.88
  5. Step 5: Solve for x
    x = 172,344,645.88/15,025.95
  6. Step 6: Final answer
    x = 11,469.80

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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.