Home / 13,286.61-18,335.30-7,318.83

Finding the Fourth Proportional to 13,286.61, 18,335.30 and 7,318.83

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Solution

The fourth proportional to 13,286.61, 18,335.30 and 7,318.83 is: 10,099.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.61 : 18,335.30 = 7,318.83 : x
  2. Step 2: Convert to fraction form
    13,286.61/18,335.30 = 7,318.83/x
  3. Step 3: Cross multiply
    13,286.61x = 18,335.30 × 7,318.83
  4. Step 4: Simplify right side
    13,286.61x = 134,192,955.17
  5. Step 5: Solve for x
    x = 134,192,955.17/13,286.61
  6. Step 6: Final answer
    x = 10,099.87

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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.