Home / 13,299.17-18,333.24-8,518.55

Finding the Fourth Proportional to 13,299.17, 18,333.24 and 8,518.55

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Solution

The fourth proportional to 13,299.17, 18,333.24 and 8,518.55 is: 11,743.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.17 : 18,333.24 = 8,518.55 : x
  2. Step 2: Convert to fraction form
    13,299.17/18,333.24 = 8,518.55/x
  3. Step 3: Cross multiply
    13,299.17x = 18,333.24 × 8,518.55
  4. Step 4: Simplify right side
    13,299.17x = 156,172,621.60
  5. Step 5: Solve for x
    x = 156,172,621.60/13,299.17
  6. Step 6: Final answer
    x = 11,743.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.