Home / 13,687.14-20,530.72-3,298.90

Finding the Fourth Proportional to 13,687.14, 20,530.72 and 3,298.90

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Solution

The fourth proportional to 13,687.14, 20,530.72 and 3,298.90 is: 4,948.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,687.14 : 20,530.72 = 3,298.90 : x
  2. Step 2: Convert to fraction form
    13,687.14/20,530.72 = 3,298.90/x
  3. Step 3: Cross multiply
    13,687.14x = 20,530.72 × 3,298.90
  4. Step 4: Simplify right side
    13,687.14x = 67,728,792.21
  5. Step 5: Solve for x
    x = 67,728,792.21/13,687.14
  6. Step 6: Final answer
    x = 4,948.35

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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.