Home / 13,286.20-18,335.08-7,317.89

Finding the Fourth Proportional to 13,286.20, 18,335.08 and 7,317.89

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Solution

The fourth proportional to 13,286.20, 18,335.08 and 7,317.89 is: 10,098.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.20 : 18,335.08 = 7,317.89 : x
  2. Step 2: Convert to fraction form
    13,286.20/18,335.08 = 7,317.89/x
  3. Step 3: Cross multiply
    13,286.20x = 18,335.08 × 7,317.89
  4. Step 4: Simplify right side
    13,286.20x = 134,174,098.58
  5. Step 5: Solve for x
    x = 134,174,098.58/13,286.20
  6. Step 6: Final answer
    x = 10,098.76

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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.