Home / 13,286.19-18,334.65-7,317.72

Finding the Fourth Proportional to 13,286.19, 18,334.65 and 7,317.72

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Solution

The fourth proportional to 13,286.19, 18,334.65 and 7,317.72 is: 10,098.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.19 : 18,334.65 = 7,317.72 : x
  2. Step 2: Convert to fraction form
    13,286.19/18,334.65 = 7,317.72/x
  3. Step 3: Cross multiply
    13,286.19x = 18,334.65 × 7,317.72
  4. Step 4: Simplify right side
    13,286.19x = 134,167,835.00
  5. Step 5: Solve for x
    x = 134,167,835.00/13,286.19
  6. Step 6: Final answer
    x = 10,098.29

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Double scale
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Similar ratio
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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.