Home / 15,025.85-20,735.69-8,219.96

Finding the Fourth Proportional to 15,025.85, 20,735.69 and 8,219.96

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Solution

The fourth proportional to 15,025.85, 20,735.69 and 8,219.96 is: 11,343.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.85 : 20,735.69 = 8,219.96 : x
  2. Step 2: Convert to fraction form
    15,025.85/20,735.69 = 8,219.96/x
  3. Step 3: Cross multiply
    15,025.85x = 20,735.69 × 8,219.96
  4. Step 4: Simplify right side
    15,025.85x = 170,446,397.59
  5. Step 5: Solve for x
    x = 170,446,397.59/15,025.85
  6. Step 6: Final answer
    x = 11,343.55

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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.