Home / 13,146.16-18,142.11-7,481.71

Finding the Fourth Proportional to 13,146.16, 18,142.11 and 7,481.71

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Solution

The fourth proportional to 13,146.16, 18,142.11 and 7,481.71 is: 10,324.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.16 : 18,142.11 = 7,481.71 : x
  2. Step 2: Convert to fraction form
    13,146.16/18,142.11 = 7,481.71/x
  3. Step 3: Cross multiply
    13,146.16x = 18,142.11 × 7,481.71
  4. Step 4: Simplify right side
    13,146.16x = 135,734,005.81
  5. Step 5: Solve for x
    x = 135,734,005.81/13,146.16
  6. Step 6: Final answer
    x = 10,324.99

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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.