Home / 13,449.20-20,184.30-9,318.20

Finding the Fourth Proportional to 13,449.20, 20,184.30 and 9,318.20

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Solution

The fourth proportional to 13,449.20, 20,184.30 and 9,318.20 is: 13,984.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.20 : 20,184.30 = 9,318.20 : x
  2. Step 2: Convert to fraction form
    13,449.20/20,184.30 = 9,318.20/x
  3. Step 3: Cross multiply
    13,449.20x = 20,184.30 × 9,318.20
  4. Step 4: Simplify right side
    13,449.20x = 188,081,344.26
  5. Step 5: Solve for x
    x = 188,081,344.26/13,449.20
  6. Step 6: Final answer
    x = 13,984.57

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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.