Home / 13,418.22-18,515.17-7,449.94

Finding the Fourth Proportional to 13,418.22, 18,515.17 and 7,449.94

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Solution

The fourth proportional to 13,418.22, 18,515.17 and 7,449.94 is: 10,279.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.22 : 18,515.17 = 7,449.94 : x
  2. Step 2: Convert to fraction form
    13,418.22/18,515.17 = 7,449.94/x
  3. Step 3: Cross multiply
    13,418.22x = 18,515.17 × 7,449.94
  4. Step 4: Simplify right side
    13,418.22x = 137,936,905.59
  5. Step 5: Solve for x
    x = 137,936,905.59/13,418.22
  6. Step 6: Final answer
    x = 10,279.82

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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.