Home / 18,279.20-27,429.60-13,336.40

Finding the Fourth Proportional to 18,279.20, 27,429.60 and 13,336.40

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Solution

The fourth proportional to 18,279.20, 27,429.60 and 13,336.40 is: 20,012.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.20 : 27,429.60 = 13,336.40 : x
  2. Step 2: Convert to fraction form
    18,279.20/27,429.60 = 13,336.40/x
  3. Step 3: Cross multiply
    18,279.20x = 27,429.60 × 13,336.40
  4. Step 4: Simplify right side
    18,279.20x = 365,812,117.44
  5. Step 5: Solve for x
    x = 365,812,117.44/18,279.20
  6. Step 6: Final answer
    x = 20,012.48

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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.