Home / 13,286.11-18,334.55-7,317.83

Finding the Fourth Proportional to 13,286.11, 18,334.55 and 7,317.83

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Solution

The fourth proportional to 13,286.11, 18,334.55 and 7,317.83 is: 10,098.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.11 : 18,334.55 = 7,317.83 : x
  2. Step 2: Convert to fraction form
    13,286.11/18,334.55 = 7,317.83/x
  3. Step 3: Cross multiply
    13,286.11x = 18,334.55 × 7,317.83
  4. Step 4: Simplify right side
    13,286.11x = 134,169,081.03
  5. Step 5: Solve for x
    x = 134,169,081.03/13,286.11
  6. Step 6: Final answer
    x = 10,098.45

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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.