Home / 13,418.21-18,516.18-7,449.52

Finding the Fourth Proportional to 13,418.21, 18,516.18 and 7,449.52

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Solution

The fourth proportional to 13,418.21, 18,516.18 and 7,449.52 is: 10,279.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.21 : 18,516.18 = 7,449.52 : x
  2. Step 2: Convert to fraction form
    13,418.21/18,516.18 = 7,449.52/x
  3. Step 3: Cross multiply
    13,418.21x = 18,516.18 × 7,449.52
  4. Step 4: Simplify right side
    13,418.21x = 137,936,653.23
  5. Step 5: Solve for x
    x = 137,936,653.23/13,418.21
  6. Step 6: Final answer
    x = 10,279.81

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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.