Home / 13,286.76-18,335.49-7,318.99

Finding the Fourth Proportional to 13,286.76, 18,335.49 and 7,318.99

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Solution

The fourth proportional to 13,286.76, 18,335.49 and 7,318.99 is: 10,100.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,286.76 : 18,335.49 = 7,318.99 : x
  2. Step 2: Convert to fraction form
    13,286.76/18,335.49 = 7,318.99/x
  3. Step 3: Cross multiply
    13,286.76x = 18,335.49 × 7,318.99
  4. Step 4: Simplify right side
    13,286.76x = 134,197,176.28
  5. Step 5: Solve for x
    x = 134,197,176.28/13,286.76
  6. Step 6: Final answer
    x = 10,100.07

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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.