Home / 13,351.36-18,424.14-7,382.68

Finding the Fourth Proportional to 13,351.36, 18,424.14 and 7,382.68

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Solution

The fourth proportional to 13,351.36, 18,424.14 and 7,382.68 is: 10,187.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.36 : 18,424.14 = 7,382.68 : x
  2. Step 2: Convert to fraction form
    13,351.36/18,424.14 = 7,382.68/x
  3. Step 3: Cross multiply
    13,351.36x = 18,424.14 × 7,382.68
  4. Step 4: Simplify right side
    13,351.36x = 136,019,529.90
  5. Step 5: Solve for x
    x = 136,019,529.90/13,351.36
  6. Step 6: Final answer
    x = 10,187.69

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Half scale
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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.