Home / 13,137.67-18,129.22-7,473.79

Finding the Fourth Proportional to 13,137.67, 18,129.22 and 7,473.79

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Solution

The fourth proportional to 13,137.67, 18,129.22 and 7,473.79 is: 10,313.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.67 : 18,129.22 = 7,473.79 : x
  2. Step 2: Convert to fraction form
    13,137.67/18,129.22 = 7,473.79/x
  3. Step 3: Cross multiply
    13,137.67x = 18,129.22 × 7,473.79
  4. Step 4: Simplify right side
    13,137.67x = 135,493,983.14
  5. Step 5: Solve for x
    x = 135,493,983.14/13,137.67
  6. Step 6: Final answer
    x = 10,313.40

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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.