Home / 13,678.34-20,517.52-3,290.10

Finding the Fourth Proportional to 13,678.34, 20,517.52 and 3,290.10

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Solution

The fourth proportional to 13,678.34, 20,517.52 and 3,290.10 is: 4,935.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.34 : 20,517.52 = 3,290.10 : x
  2. Step 2: Convert to fraction form
    13,678.34/20,517.52 = 3,290.10/x
  3. Step 3: Cross multiply
    13,678.34x = 20,517.52 × 3,290.10
  4. Step 4: Simplify right side
    13,678.34x = 67,504,692.55
  5. Step 5: Solve for x
    x = 67,504,692.55/13,678.34
  6. Step 6: Final answer
    x = 4,935.15

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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.