Home / 13,520.04-20,281.68-5,198.12

Finding the Fourth Proportional to 13,520.04, 20,281.68 and 5,198.12

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Solution

The fourth proportional to 13,520.04, 20,281.68 and 5,198.12 is: 7,797.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.04 : 20,281.68 = 5,198.12 : x
  2. Step 2: Convert to fraction form
    13,520.04/20,281.68 = 5,198.12/x
  3. Step 3: Cross multiply
    13,520.04x = 20,281.68 × 5,198.12
  4. Step 4: Simplify right side
    13,520.04x = 105,426,606.44
  5. Step 5: Solve for x
    x = 105,426,606.44/13,520.04
  6. Step 6: Final answer
    x = 7,797.80

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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.