Home / 13,285.12-19,921.92-4,517.68

Finding the Fourth Proportional to 13,285.12, 19,921.92 and 4,517.68

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Solution

The fourth proportional to 13,285.12, 19,921.92 and 4,517.68 is: 6,774.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285.12 : 19,921.92 = 4,517.68 : x
  2. Step 2: Convert to fraction form
    13,285.12/19,921.92 = 4,517.68/x
  3. Step 3: Cross multiply
    13,285.12x = 19,921.92 × 4,517.68
  4. Step 4: Simplify right side
    13,285.12x = 90,000,859.55
  5. Step 5: Solve for x
    x = 90,000,859.55/13,285.12
  6. Step 6: Final answer
    x = 6,774.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.