Home / 13,147.92-18,146.50-7,843.10

Finding the Fourth Proportional to 13,147.92, 18,146.50 and 7,843.10

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Solution

The fourth proportional to 13,147.92, 18,146.50 and 7,843.10 is: 10,824.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.92 : 18,146.50 = 7,843.10 : x
  2. Step 2: Convert to fraction form
    13,147.92/18,146.50 = 7,843.10/x
  3. Step 3: Cross multiply
    13,147.92x = 18,146.50 × 7,843.10
  4. Step 4: Simplify right side
    13,147.92x = 142,324,703.81
  5. Step 5: Solve for x
    x = 142,324,703.81/13,147.92
  6. Step 6: Final answer
    x = 10,824.88

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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.