Home / 13,499.68-18,629.58-7,449.78

Finding the Fourth Proportional to 13,499.68, 18,629.58 and 7,449.78

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Solution

The fourth proportional to 13,499.68, 18,629.58 and 7,449.78 is: 10,280.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,499.68 : 18,629.58 = 7,449.78 : x
  2. Step 2: Convert to fraction form
    13,499.68/18,629.58 = 7,449.78/x
  3. Step 3: Cross multiply
    13,499.68x = 18,629.58 × 7,449.78
  4. Step 4: Simplify right side
    13,499.68x = 138,786,272.49
  5. Step 5: Solve for x
    x = 138,786,272.49/13,499.68
  6. Step 6: Final answer
    x = 10,280.71

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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.