Home / 13,351.21-18,424.40-7,382.73

Finding the Fourth Proportional to 13,351.21, 18,424.40 and 7,382.73

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Solution

The fourth proportional to 13,351.21, 18,424.40 and 7,382.73 is: 10,188.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.21 : 18,424.40 = 7,382.73 : x
  2. Step 2: Convert to fraction form
    13,351.21/18,424.40 = 7,382.73/x
  3. Step 3: Cross multiply
    13,351.21x = 18,424.40 × 7,382.73
  4. Step 4: Simplify right side
    13,351.21x = 136,022,370.61
  5. Step 5: Solve for x
    x = 136,022,370.61/13,351.21
  6. Step 6: Final answer
    x = 10,188.02

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Half scale
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Double scale
Find fourth proportional to 13,352.21, 18,425.78 and 7,383.73
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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.