Home / 13,286.18-18,333.33-7,620.63

Finding the Fourth Proportional to 13,286.18, 18,333.33 and 7,620.63

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Solution

The fourth proportional to 13,286.18, 18,333.33 and 7,620.63 is: 10,515.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.18 : 18,333.33 = 7,620.63 : x
  2. Step 2: Convert to fraction form
    13,286.18/18,333.33 = 7,620.63/x
  3. Step 3: Cross multiply
    13,286.18x = 18,333.33 × 7,620.63
  4. Step 4: Simplify right side
    13,286.18x = 139,711,624.82
  5. Step 5: Solve for x
    x = 139,711,624.82/13,286.18
  6. Step 6: Final answer
    x = 10,515.56

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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.